diff --git a/src/lib/code-runner/engines/pyodide.ts b/src/lib/code-runner/engines/pyodide.ts
new file mode 100644
index 0000000..336947b
--- /dev/null
+++ b/src/lib/code-runner/engines/pyodide.ts
@@ -0,0 +1,265 @@
+/**
+ * Python Pyodide 执行引擎
+ * 使用 Pyodide (Python WebAssembly) 在浏览器中执行 Python 代码
+ */
+
+import type { IExecutionEngine, ExecutionResult } from '../types';
+
+// Pyodide 类型定义
+interface PyodideInterface {
+  runPython(code: string): unknown;
+  runPythonAsync(code: string): Promise<unknown>;
+  loadPackage(packages: string | string[]): Promise<void>;
+  loadPackagesFromImports(code: string): Promise<void>;
+  globals: Map<string, unknown>;
+}
+
+// 加载状态回调
+export interface PyodideLoadingCallback {
+  onLoadingStart?: () => void;
+  onLoadingProgress?: (message: string, progress?: number) => void;
+  onLoadingComplete?: () => void;
+  onLoadingError?: (error: string) => void;
+}
+
+// 执行超时时间（毫秒）
+const EXECUTION_TIMEOUT = 30000;
+
+// 最大输出长度
+const MAX_OUTPUT_LENGTH = 50000;
+
+// Pyodide CDN URL
+const PYODIDE_CDN = 'https://cdn.jsdelivr.net/pyodide/v0.24.1/full/';
+
+class PyodideEngine implements IExecutionEngine {
+  private pyodide: PyodideInterface | null = null;
+  private loading = false;
+  private loadPromise: Promise<PyodideInterface> | null = null;
+  private loadingCallbacks: PyodideLoadingCallback | null = null;
+
+  supports(language: string): boolean {
+    const lang = language.toLowerCase();
+    return ['python', 'py'].includes(lang);
+  }
+
+  // 设置加载回调
+  setLoadingCallbacks(callbacks: PyodideLoadingCallback | null): void {
+    this.loadingCallbacks = callbacks;
+  }
+
+  // 检查是否已加载
+  isLoaded(): boolean {
+    return this.pyodide !== null;
+  }
+
+  // 检查是否正在加载
+  isLoading(): boolean {
+    return this.loading;
+  }
+
+  // 预加载 Pyodide（可选，提前加载以减少首次执行延迟）
+  async preload(): Promise<void> {
+    if (!this.pyodide && !this.loading) {
+      await this.loadPyodide();
+    }
+  }
+
+  async execute(code: string, language: string): Promise<ExecutionResult> {
+    const startTime = performance.now();
+
+    try {
+      // 确保 Pyodide 已加载
+      if (!this.pyodide) {
+        await this.loadPyodide();
+      }
+
+      if (!this.pyodide) {
+        throw new Error('Pyodide 加载失败');
+      }
+
+      // 尝试加载代码中 import 的包
+      try {
+        await this.pyodide.loadPackagesFromImports(code);
+      } catch {
+        // 忽略包加载错误，继续执行
+      }
+
+      // 执行代码并捕获输出
+      const output = await this.executeWithTimeout(code);
+      const executionTime = Math.round(performance.now() - startTime);
+
+      return {
+        success: true,
+        output: output.slice(0, MAX_OUTPUT_LENGTH),
+        executionTime,
+        engine: 'pyodide',
+      };
+    } catch (error) {
+      const executionTime = Math.round(performance.now() - startTime);
+      return {
+        success: false,
+        output: '',
+        error: this.formatPythonError(error),
+        executionTime,
+        engine: 'pyodide',
+      };
+    }
+  }
+
+  private async loadPyodide(): Promise<PyodideInterface> {
+    if (this.pyodide) {
+      return this.pyodide;
+    }
+
+    if (this.loadPromise) {
+      return this.loadPromise;
+    }
+
+    this.loading = true;
+    this.loadingCallbacks?.onLoadingStart?.();
+    this.loadingCallbacks?.onLoadingProgress?.('正在加载 Python 运行时...', 0);
+
+    this.loadPromise = new Promise<PyodideInterface>(async (resolve, reject) => {
+      try {
+        // 动态加载 Pyodide 脚本
+        if (typeof window !== 'undefined' && !(window as unknown as Record<string, unknown>).loadPyodide) {
+          this.loadingCallbacks?.onLoadingProgress?.('正在下载 Pyodide...', 20);
+          await this.loadScript(`${PYODIDE_CDN}pyodide.js`);
+        }
+
+        this.loadingCallbacks?.onLoadingProgress?.('正在初始化 Python 环境...', 50);
+
+        // 初始化 Pyodide
+        const loadPyodide = (window as unknown as { loadPyodide: (config: { indexURL: string }) => Promise<PyodideInterface> }).loadPyodide;
+
+        const pyodide = await loadPyodide({
+          indexURL: PYODIDE_CDN,
+        });
+
+        this.loadingCallbacks?.onLoadingProgress?.('Python 环境准备就绪', 100);
+
+        // 设置标准输出重定向
+        await pyodide.runPythonAsync(`
+import sys
+from io import StringIO
+
+class OutputCapture:
+    def __init__(self):
+        self.outputs = []
+
+    def write(self, text):
+        if text and text.strip():
+            self.outputs.append(str(text))
+
+    def flush(self):
+        pass
+
+    def get_output(self):
+        return ''.join(self.outputs)
+
+    def clear(self):
+        self.outputs = []
+
+__output_capture__ = OutputCapture()
+sys.stdout = __output_capture__
+sys.stderr = __output_capture__
+        `);
+
+        this.pyodide = pyodide;
+        this.loading = false;
+        this.loadingCallbacks?.onLoadingComplete?.();
+
+        resolve(pyodide);
+      } catch (error) {
+        this.loading = false;
+        this.loadPromise = null;
+        const errorMsg = error instanceof Error ? error.message : String(error);
+        this.loadingCallbacks?.onLoadingError?.(errorMsg);
+        reject(new Error(`Pyodide 加载失败: ${errorMsg}`));
+      }
+    });
+
+    return this.loadPromise;
+  }
+
+  private loadScript(src: string): Promise<void> {
+    return new Promise((resolve, reject) => {
+      const script = document.createElement('script');
+      script.src = src;
+      script.onload = () => resolve();
+      script.onerror = () => reject(new Error(`Failed to load script: ${src}`));
+      document.head.appendChild(script);
+    });
+  }
+
+  private async executeWithTimeout(code: string): Promise<string> {
+    return new Promise(async (resolve, reject) => {
+      const timeoutId = setTimeout(() => {
+        reject(new Error(`执行超时（${EXECUTION_TIMEOUT / 1000}秒）`));
+      }, EXECUTION_TIMEOUT);
+
+      try {
+        if (!this.pyodide) {
+          throw new Error('Pyodide 未加载');
+        }
+
+        // 清空之前的输出
+        await this.pyodide.runPythonAsync('__output_capture__.clear()');
+
+        // 执行用户代码
+        const result = await this.pyodide.runPythonAsync(code);
+
+        // 获取捕获的输出
+        const capturedOutput = await this.pyodide.runPythonAsync('__output_capture__.get_output()');
+
+        clearTimeout(timeoutId);
+
+        // 组合输出
+        let output = String(capturedOutput || '');
+
+        // 如果代码有返回值且不是 None，添加到输出
+        if (result !== undefined && result !== null && String(result) !== 'None') {
+          if (output) {
+            output += '\n';
+          }
+          output += String(result);
+        }
+
+        resolve(output);
+      } catch (error) {
+        clearTimeout(timeoutId);
+        reject(error);
+      }
+    });
+  }
+
+  private formatPythonError(error: unknown): string {
+    if (error instanceof Error) {
+      let message = error.message;
+
+      // 清理 Pyodide 错误信息
+      message = message
+        .replace(/PythonError:\s*/g, '')
+        .replace(/Traceback \(most recent call last\):\s*/g, 'Traceback:\n')
+        .replace(/File "<exec>", /g, '')
+        .trim();
+
+      return message;
+    }
+    return String(error);
+  }
+
+  // 加载额外的 Python 包
+  async loadPackages(packages: string[]): Promise<void> {
+    if (!this.pyodide) {
+      await this.loadPyodide();
+    }
+
+    if (this.pyodide) {
+      await this.pyodide.loadPackage(packages);
+    }
+  }
+}
+
+// 导出单例
+export const pyodideEngine = new PyodideEngine();
diff --git a/src/lib/code-runner/engines/remote.ts b/src/lib/code-runner/engines/remote.ts
new file mode 100644
index 0000000..d49706e
--- /dev/null
+++ b/src/lib/code-runner/engines/remote.ts
@@ -0,0 +1,252 @@
+/**
+ * 远程代码执行引擎
+ * 通过 Piston API 执行 Java、Go、C/C++、Rust 等语言
+ */
+
+import type { IExecutionEngine, ExecutionResult, LanguageConfig } from '../types';
+import { RUNNABLE_LANGUAGES } from '../types';
+
+// 最大输出长度
+const MAX_OUTPUT_LENGTH = 50000;
+
+// Piston API 响应类型
+interface PistonResponse {
+  language: string;
+  version: string;
+  run: {
+    stdout: string;
+    stderr: string;
+    output: string;
+    code: number;
+    signal: string | null;
+  };
+  compile?: {
+    stdout: string;
+    stderr: string;
+    output: string;
+    code: number;
+    signal: string | null;
+  };
+}
+
+class RemoteEngine implements IExecutionEngine {
+  private abortController: AbortController | null = null;
+
+  supports(language: string): boolean {
+    const config = this.getConfig(language);
+    return config !== null && config.engine === 'remote';
+  }
+
+  private getConfig(language: string): LanguageConfig | null {
+    return RUNNABLE_LANGUAGES[language.toLowerCase()] || null;
+  }
+
+  async execute(code: string, language: string): Promise<ExecutionResult> {
+    const startTime = performance.now();
+    const config = this.getConfig(language);
+
+    if (!config || !config.pistonLanguage) {
+      return {
+        success: false,
+        output: '',
+        error: `不支持的语言: ${language}`,
+        executionTime: 0,
+        engine: 'remote',
+      };
+    }
+
+    try {
+      this.abortController = new AbortController();
+
+      // 确定文件名
+      const fileName = this.getFileName(language, config);
+
+      // 对于 Java，将非 ASCII 字符转换为 Unicode 转义序列
+      const processedCode = this.preprocessCode(code, language);
+
+      // 调用后端代理 API
+      const response = await fetch('/api/code/execute', {
+        method: 'POST',
+        headers: {
+          'Content-Type': 'application/json',
+        },
+        body: JSON.stringify({
+          language: config.pistonLanguage,
+          version: config.pistonVersion || '*',
+          files: [
+            {
+              name: fileName,
+              content: processedCode,
+            },
+          ],
+        }),
+        signal: this.abortController.signal,
+      });
+
+      const executionTime = Math.round(performance.now() - startTime);
+
+      if (!response.ok) {
+        const errorData = await response.json().catch(() => ({ error: '执行失败' }));
+        return {
+          success: false,
+          output: '',
+          error: errorData.error || `HTTP ${response.status}`,
+          executionTime,
+          engine: 'remote',
+        };
+      }
+
+      const result: PistonResponse = await response.json();
+
+      // 处理编译错误
+      if (result.compile && result.compile.code !== 0) {
+        return {
+          success: false,
+          output: '',
+          error: this.formatOutput(result.compile.stderr || result.compile.output, '编译错误'),
+          executionTime,
+          engine: 'remote',
+        };
+      }
+
+      // 处理运行结果
+      const hasError = result.run.code !== 0 || result.run.signal !== null;
+      const output = this.formatOutput(result.run.stdout || result.run.output);
+      const errorOutput = result.run.stderr ? this.formatOutput(result.run.stderr) : undefined;
+
+      return {
+        success: !hasError || (output.length > 0 && !errorOutput),
+        output: output.slice(0, MAX_OUTPUT_LENGTH),
+        error: hasError ? errorOutput || `退出代码: ${result.run.code}` : undefined,
+        executionTime,
+        engine: 'remote',
+      };
+    } catch (error) {
+      const executionTime = Math.round(performance.now() - startTime);
+
+      if (error instanceof Error && error.name === 'AbortError') {
+        return {
+          success: false,
+          output: '',
+          error: '执行已取消',
+          executionTime,
+          engine: 'remote',
+        };
+      }
+
+      return {
+        success: false,
+        output: '',
+        error: error instanceof Error ? error.message : '执行失败',
+        executionTime,
+        engine: 'remote',
+      };
+    }
+  }
+
+  stop(): void {
+    if (this.abortController) {
+      this.abortController.abort();
+      this.abortController = null;
+    }
+  }
+
+  private getFileName(language: string, config: LanguageConfig): string {
+    const lang = language.toLowerCase();
+    const ext = config.fileExtension || lang;
+
+    // 特殊处理 Java（需要类名匹配文件名）
+    if (lang === 'java') {
+      return 'Main.java';
+    }
+
+    return `main.${ext}`;
+  }
+
+  /**
+   * 预处理代码，将非 ASCII 字符转换为 Unicode 转义序列
+   * 解决 Piston API 不支持 UTF-8 输出的问题
+   */
+  private preprocessCode(code: string, language: string): string {
+    const lang = language.toLowerCase();
+
+    // 只对 Java 进行处理（Java 字符串支持 \uXXXX 转义）
+    if (lang === 'java') {
+      return this.escapeNonAsciiForJava(code);
+    }
+
+    return code;
+  }
+
+  /**
+   * 将 Java 代码中字符串内的非 ASCII 字符转换为 Unicode 转义序列
+   * 并注入 UTF-8 输出流设置
+   */
+  private escapeNonAsciiForJava(code: string): string {
+    // 首先处理字符串中的非 ASCII 字符
+    // 处理双引号字符串
+    let result = code.replace(/"([^"\\]|\\.)*"/g, (match) => {
+      return this.escapeStringContent(match, '"');
+    });
+
+    // 处理单引号字符（char）
+    result = result.replace(/'([^'\\]|\\.)*'/g, (match) => {
+      return this.escapeStringContent(match, "'");
+    });
+
+    // 注入 UTF-8 输出流设置到 main 方法开头
+    // 匹配 public static void main 方法
+    const mainMethodRegex = /(public\s+static\s+void\s+main\s*\([^)]*\)\s*\{)/;
+    const utf8Setup = `$1
+        try { System.setOut(new java.io.PrintStream(System.out, true, "UTF-8")); } catch (Exception e) {}`;
+
+    result = result.replace(mainMethodRegex, utf8Setup);
+
+    return result;
+  }
+
+  /**
+   * 转义字符串内容中的非 ASCII 字符
+   */
+  private escapeStringContent(str: string, quote: string): string {
+    const content = str.slice(1, -1); // 移除引号
+    let escaped = '';
+
+    for (let i = 0; i < content.length; i++) {
+      const char = content[i];
+      const code = char.charCodeAt(0);
+
+      // 处理转义序列（保留原样）
+      if (char === '\\' && i + 1 < content.length) {
+        escaped += char + content[i + 1];
+        i++;
+        continue;
+      }
+
+      // 非 ASCII 字符转换为 \uXXXX
+      if (code > 127) {
+        escaped += '\\u' + code.toString(16).padStart(4, '0');
+      } else {
+        escaped += char;
+      }
+    }
+
+    return quote + escaped + quote;
+  }
+
+  private formatOutput(output: string, prefix?: string): string {
+    let result = output.trim();
+
+    // 移除 ANSI 颜色代码
+    result = result.replace(/\x1b\[[0-9;]*m/g, '');
+
+    if (prefix && result) {
+      return `${prefix}:\n${result}`;
+    }
+
+    return result;
+  }
+}
+
+// 导出单例
+export const remoteEngine = new RemoteEngine();
diff --git a/src/lib/code-runner/engines/sandbox.ts b/src/lib/code-runner/engines/sandbox.ts
new file mode 100644
index 0000000..857437e
--- /dev/null
+++ b/src/lib/code-runner/engines/sandbox.ts
@@ -0,0 +1,224 @@
+/**
+ * JavaScript/TypeScript 沙箱执行引擎
+ * 在隔离的 iframe 中安全执行代码
+ */
+
+import type { IExecutionEngine, ExecutionResult } from '../types';
+
+// 执行超时时间（毫秒）
+const EXECUTION_TIMEOUT = 10000;
+
+// 最大输出长度
+const MAX_OUTPUT_LENGTH = 50000;
+
+export class SandboxEngine implements IExecutionEngine {
+  private iframe: HTMLIFrameElement | null = null;
+  private abortController: AbortController | null = null;
+
+  supports(language: string): boolean {
+    const lang = language.toLowerCase();
+    return ['javascript', 'js', 'typescript', 'ts'].includes(lang);
+  }
+
+  async execute(code: string, language: string): Promise<ExecutionResult> {
+    const startTime = performance.now();
+    const lang = language.toLowerCase();
+
+    try {
+      // TypeScript 需要先编译
+      let executableCode = code;
+      if (lang === 'typescript' || lang === 'ts') {
+        executableCode = this.transpileTypeScript(code);
+      }
+
+      // 在沙箱中执行
+      const output = await this.executeInSandbox(executableCode);
+      const executionTime = Math.round(performance.now() - startTime);
+
+      return {
+        success: true,
+        output: output.slice(0, MAX_OUTPUT_LENGTH),
+        executionTime,
+        engine: 'sandbox',
+      };
+    } catch (error) {
+      const executionTime = Math.round(performance.now() - startTime);
+      return {
+        success: false,
+        output: '',
+        error: error instanceof Error ? error.message : String(error),
+        executionTime,
+        engine: 'sandbox',
+      };
+    }
+  }
+
+  stop(): void {
+    if (this.abortController) {
+      this.abortController.abort();
+    }
+    this.cleanup();
+  }
+
+  private transpileTypeScript(code: string): string {
+    // 简单的 TypeScript 转换（移除类型注解）
+    // 实际项目中可以使用 @babel/standalone 或 typescript
+    return code
+      // 移除类型注解
+      .replace(/:\s*\w+(\[\])?(\s*[=,)])/g, '$2')
+      // 移除接口定义
+      .replace(/interface\s+\w+\s*\{[^}]*\}/g, '')
+      // 移除类型别名
+      .replace(/type\s+\w+\s*=\s*[^;]+;/g, '')
+      // 移除泛型
+      .replace(/<[^>]+>/g, '')
+      // 移除 as 类型断言
+      .replace(/\s+as\s+\w+/g, '')
+      // 移除 ! 非空断言
+      .replace(/!\./g, '.')
+      // 移除可选链前的类型
+      .replace(/\?\./g, '?.');
+  }
+
+  private executeInSandbox(code: string): Promise<string> {
+    return new Promise((resolve, reject) => {
+      this.abortController = new AbortController();
+      const outputs: string[] = [];
+
+      // 创建隔离的 iframe
+      this.iframe = document.createElement('iframe');
+      this.iframe.style.display = 'none';
+      this.iframe.sandbox.add('allow-scripts');
+      document.body.appendChild(this.iframe);
+
+      const iframeWindow = this.iframe.contentWindow;
+      if (!iframeWindow) {
+        this.cleanup();
+        reject(new Error('无法创建执行沙箱'));
+        return;
+      }
+
+      // 设置超时
+      const timeoutId = setTimeout(() => {
+        this.cleanup();
+        reject(new Error(`执行超时（${EXECUTION_TIMEOUT / 1000}秒）`));
+      }, EXECUTION_TIMEOUT);
+
+      // 监听消息
+      const messageHandler = (event: MessageEvent) => {
+        if (event.source !== iframeWindow) return;
+
+        const { type, data } = event.data;
+
+        if (type === 'console') {
+          outputs.push(data);
+        } else if (type === 'done') {
+          clearTimeout(timeoutId);
+          window.removeEventListener('message', messageHandler);
+          this.cleanup();
+          resolve(outputs.join('\n'));
+        } else if (type === 'error') {
+          clearTimeout(timeoutId);
+          window.removeEventListener('message', messageHandler);
+          this.cleanup();
+          reject(new Error(data));
+        }
+      };
+
+      window.addEventListener('message', messageHandler);
+
+      // 中止处理
+      this.abortController.signal.addEventListener('abort', () => {
+        clearTimeout(timeoutId);
+        window.removeEventListener('message', messageHandler);
+        this.cleanup();
+        reject(new Error('执行已取消'));
+      });
+
+      // 在 iframe 中执行代码
+      const sandboxCode = `
+        (function() {
+          const outputs = [];
+
+          // 重写 console 方法
+          const originalConsole = console;
+          const customConsole = {
+            log: (...args) => {
+              const msg = args.map(a => {
+                if (typeof a === 'object') {
+                  try {
+                    return JSON.stringify(a, null, 2);
+                  } catch {
+                    return String(a);
+                  }
+                }
+                return String(a);
+              }).join(' ');
+              parent.postMessage({ type: 'console', data: msg }, '*');
+            },
+            error: (...args) => customConsole.log('[Error]', ...args),
+            warn: (...args) => customConsole.log('[Warn]', ...args),
+            info: (...args) => customConsole.log(...args),
+            debug: (...args) => customConsole.log('[Debug]', ...args),
+            table: (data) => customConsole.log(JSON.stringify(data, null, 2)),
+            clear: () => {},
+            dir: (obj) => customConsole.log(obj),
+            time: () => {},
+            timeEnd: () => {},
+            group: () => {},
+            groupEnd: () => {},
+          };
+
+          // 替换全局 console
+          window.console = customConsole;
+
+          // 限制危险 API
+          delete window.fetch;
+          delete window.XMLHttpRequest;
+          delete window.WebSocket;
+          delete window.localStorage;
+          delete window.sessionStorage;
+          delete window.indexedDB;
+          delete window.open;
+          delete window.close;
+          delete window.alert;
+          delete window.confirm;
+          delete window.prompt;
+
+          try {
+            // 执行用户代码
+            const result = eval(${JSON.stringify(code)});
+
+            // 如果有返回值且不是 undefined，输出它
+            if (result !== undefined) {
+              customConsole.log(result);
+            }
+
+            parent.postMessage({ type: 'done' }, '*');
+          } catch (error) {
+            parent.postMessage({ type: 'error', data: error.message || String(error) }, '*');
+          }
+        })();
+      `;
+
+      // 写入并执行
+      const iframeDoc = this.iframe.contentDocument;
+      if (iframeDoc) {
+        iframeDoc.open();
+        iframeDoc.write(`<script>${sandboxCode}</script>`);
+        iframeDoc.close();
+      }
+    });
+  }
+
+  private cleanup(): void {
+    if (this.iframe && this.iframe.parentNode) {
+      this.iframe.parentNode.removeChild(this.iframe);
+    }
+    this.iframe = null;
+    this.abortController = null;
+  }
+}
+
+// 导出单例
+export const sandboxEngine = new SandboxEngine();
diff --git a/src/lib/code-runner/index.ts b/src/lib/code-runner/index.ts
new file mode 100644
index 0000000..ed7252b
--- /dev/null
+++ b/src/lib/code-runner/index.ts
@@ -0,0 +1,96 @@
+/**
+ * 代码执行引擎主入口
+ * 统一管理所有执行引擎
+ */
+
+import { sandboxEngine } from './engines/sandbox';
+import { pyodideEngine, type PyodideLoadingCallback } from './engines/pyodide';
+import { remoteEngine } from './engines/remote';
+import type { ExecutionResult, IExecutionEngine, LanguageConfig } from './types';
+import { RUNNABLE_LANGUAGES, isRunnableLanguage, getLanguageConfig, isCodeExecutable } from './types';
+
+// 所有引擎
+const engines: IExecutionEngine[] = [
+  sandboxEngine,
+  pyodideEngine,
+  remoteEngine,
+];
+
+/**
+ * 执行代码
+ */
+export async function executeCode(
+  code: string,
+  language: string
+): Promise<ExecutionResult> {
+  const normalizedLang = language.toLowerCase();
+
+  // 查找支持该语言的引擎
+  const engine = engines.find((e) => e.supports(normalizedLang));
+
+  if (!engine) {
+    return {
+      success: false,
+      output: '',
+      error: `不支持的语言: ${language}`,
+      executionTime: 0,
+      engine: 'sandbox',
+    };
+  }
+
+  return engine.execute(code, normalizedLang);
+}
+
+/**
+ * 停止所有引擎的执行
+ */
+export function stopExecution(): void {
+  engines.forEach((engine) => {
+    if (engine.stop) {
+      engine.stop();
+    }
+  });
+}
+
+/**
+ * 设置 Pyodide 加载回调
+ */
+export function setPyodideLoadingCallbacks(callbacks: PyodideLoadingCallback | null): void {
+  pyodideEngine.setLoadingCallbacks(callbacks);
+}
+
+/**
+ * 预加载 Pyodide（可选）
+ */
+export async function preloadPyodide(): Promise<void> {
+  await pyodideEngine.preload();
+}
+
+/**
+ * 检查 Pyodide 是否已加载
+ */
+export function isPyodideLoaded(): boolean {
+  return pyodideEngine.isLoaded();
+}
+
+/**
+ * 检查 Pyodide 是否正在加载
+ */
+export function isPyodideLoading(): boolean {
+  return pyodideEngine.isLoading();
+}
+
+// 导出类型和工具函数
+export {
+  isRunnableLanguage,
+  getLanguageConfig,
+  isCodeExecutable,
+  RUNNABLE_LANGUAGES,
+};
+
+export type {
+  ExecutionResult,
+  LanguageConfig,
+  IExecutionEngine,
+  PyodideLoadingCallback,
+};
diff --git a/src/lib/code-runner/types.ts b/src/lib/code-runner/types.ts
new file mode 100644
index 0000000..58fa3f7
--- /dev/null
+++ b/src/lib/code-runner/types.ts
@@ -0,0 +1,274 @@
+/**
+ * 代码执行引擎类型定义
+ */
+
+// 执行引擎类型
+export type EngineType = 'sandbox' | 'pyodide' | 'remote';
+
+// 执行状态
+export type ExecutionStatus = 'idle' | 'running' | 'success' | 'error';
+
+// 执行结果
+export interface ExecutionResult {
+  success: boolean;
+  output: string;       // 标准输出
+  error?: string;       // 错误输出
+  executionTime: number; // 执行时间(ms)
+  engine: EngineType;   // 使用的引擎
+}
+
+// 语言配置
+export interface LanguageConfig {
+  engine: EngineType;
+  label: string;
+  pistonLanguage?: string;  // Piston API 的语言标识
+  pistonVersion?: string;   // Piston API 的版本
+  fileExtension?: string;   // 文件扩展名
+}
+
+// 支持的可执行语言
+export const RUNNABLE_LANGUAGES: Record<string, LanguageConfig> = {
+  // 前端沙箱执行
+  javascript: {
+    engine: 'sandbox',
+    label: 'JavaScript',
+    fileExtension: 'js',
+  },
+  js: {
+    engine: 'sandbox',
+    label: 'JavaScript',
+    fileExtension: 'js',
+  },
+  typescript: {
+    engine: 'sandbox',
+    label: 'TypeScript',
+    fileExtension: 'ts',
+  },
+  ts: {
+    engine: 'sandbox',
+    label: 'TypeScript',
+    fileExtension: 'ts',
+  },
+
+  // Pyodide 执行
+  python: {
+    engine: 'pyodide',
+    label: 'Python',
+    fileExtension: 'py',
+  },
+  py: {
+    engine: 'pyodide',
+    label: 'Python',
+    fileExtension: 'py',
+  },
+
+  // 远程 API 执行
+  java: {
+    engine: 'remote',
+    label: 'Java',
+    pistonLanguage: 'java',
+    pistonVersion: '15.0.2',
+    fileExtension: 'java',
+  },
+  go: {
+    engine: 'remote',
+    label: 'Go',
+    pistonLanguage: 'go',
+    pistonVersion: '1.16.2',
+    fileExtension: 'go',
+  },
+  golang: {
+    engine: 'remote',
+    label: 'Go',
+    pistonLanguage: 'go',
+    pistonVersion: '1.16.2',
+    fileExtension: 'go',
+  },
+  c: {
+    engine: 'remote',
+    label: 'C',
+    pistonLanguage: 'c',
+    pistonVersion: '10.2.0',
+    fileExtension: 'c',
+  },
+  cpp: {
+    engine: 'remote',
+    label: 'C++',
+    pistonLanguage: 'c++',
+    pistonVersion: '10.2.0',
+    fileExtension: 'cpp',
+  },
+  'c++': {
+    engine: 'remote',
+    label: 'C++',
+    pistonLanguage: 'c++',
+    pistonVersion: '10.2.0',
+    fileExtension: 'cpp',
+  },
+  rust: {
+    engine: 'remote',
+    label: 'Rust',
+    pistonLanguage: 'rust',
+    pistonVersion: '1.68.2',
+    fileExtension: 'rs',
+  },
+  rs: {
+    engine: 'remote',
+    label: 'Rust',
+    pistonLanguage: 'rust',
+    pistonVersion: '1.68.2',
+    fileExtension: 'rs',
+  },
+  ruby: {
+    engine: 'remote',
+    label: 'Ruby',
+    pistonLanguage: 'ruby',
+    pistonVersion: '3.0.1',
+    fileExtension: 'rb',
+  },
+  rb: {
+    engine: 'remote',
+    label: 'Ruby',
+    pistonLanguage: 'ruby',
+    pistonVersion: '3.0.1',
+    fileExtension: 'rb',
+  },
+  php: {
+    engine: 'remote',
+    label: 'PHP',
+    pistonLanguage: 'php',
+    pistonVersion: '8.2.3',
+    fileExtension: 'php',
+  },
+  csharp: {
+    engine: 'remote',
+    label: 'C#',
+    pistonLanguage: 'csharp',
+    pistonVersion: '6.12.0',
+    fileExtension: 'cs',
+  },
+  cs: {
+    engine: 'remote',
+    label: 'C#',
+    pistonLanguage: 'csharp',
+    pistonVersion: '6.12.0',
+    fileExtension: 'cs',
+  },
+  swift: {
+    engine: 'remote',
+    label: 'Swift',
+    pistonLanguage: 'swift',
+    pistonVersion: '5.3.3',
+    fileExtension: 'swift',
+  },
+  kotlin: {
+    engine: 'remote',
+    label: 'Kotlin',
+    pistonLanguage: 'kotlin',
+    pistonVersion: '1.8.20',
+    fileExtension: 'kt',
+  },
+  kt: {
+    engine: 'remote',
+    label: 'Kotlin',
+    pistonLanguage: 'kotlin',
+    pistonVersion: '1.8.20',
+    fileExtension: 'kt',
+  },
+};
+
+// 检查语言是否可执行
+export function isRunnableLanguage(language: string): boolean {
+  return language.toLowerCase() in RUNNABLE_LANGUAGES;
+}
+
+// 获取语言配置
+export function getLanguageConfig(language: string): LanguageConfig | null {
+  return RUNNABLE_LANGUAGES[language.toLowerCase()] || null;
+}
+
+/**
+ * 检查代码是否满足运行的基本要求
+ * 不同语言有不同的入口点要求
+ */
+export function isCodeExecutable(code: string, language: string): boolean {
+  const lang = language.toLowerCase();
+  const trimmedCode = code.trim();
+
+  // 如果代码为空，不可执行
+  if (!trimmedCode) {
+    return false;
+  }
+
+  switch (lang) {
+    case 'java':
+      // Java 需要 class 定义和 main 方法
+      return /\bclass\s+\w+/.test(code) &&
+             /public\s+static\s+void\s+main\s*\(\s*String\s*\[\s*\]\s*\w*\s*\)/.test(code);
+
+    case 'go':
+    case 'golang':
+      // Go 需要 package main 和 func main()
+      return /package\s+main/.test(code) &&
+             /func\s+main\s*\(\s*\)/.test(code);
+
+    case 'c':
+      // C 需要 main 函数
+      return /\bint\s+main\s*\(/.test(code) || /\bvoid\s+main\s*\(/.test(code);
+
+    case 'cpp':
+    case 'c++':
+      // C++ 需要 main 函数
+      return /\bint\s+main\s*\(/.test(code) || /\bvoid\s+main\s*\(/.test(code);
+
+    case 'rust':
+    case 'rs':
+      // Rust 需要 fn main()
+      return /fn\s+main\s*\(\s*\)/.test(code);
+
+    case 'csharp':
+    case 'cs':
+      // C# 需要 Main 方法或者是顶级语句（简单判断：有 class 或直接有语句）
+      return /\bclass\s+\w+/.test(code) &&
+             /\bstatic\s+void\s+Main\s*\(/.test(code) ||
+             // 顶级语句：没有 class 但有实际代码
+             (!/\bclass\s+\w+/.test(code) && /\w+\s*[;(]/.test(code));
+
+    case 'kotlin':
+    case 'kt':
+      // Kotlin 需要 fun main()
+      return /fun\s+main\s*\(/.test(code);
+
+    case 'swift':
+      // Swift 可以直接执行顶级代码，只要有语句即可
+      return trimmedCode.length > 0;
+
+    case 'javascript':
+    case 'js':
+    case 'typescript':
+    case 'ts':
+    case 'python':
+    case 'py':
+    case 'ruby':
+    case 'rb':
+    case 'php':
+      // 这些语言可以直接执行任何代码
+      return true;
+
+    default:
+      // 默认检查是否有代码
+      return trimmedCode.length > 0;
+  }
+}
+
+// 执行引擎接口
+export interface IExecutionEngine {
+  // 检查是否支持该语言
+  supports(language: string): boolean;
+
+  // 执行代码
+  execute(code: string, language: string): Promise<ExecutionResult>;
+
+  // 停止执行（可选）
+  stop?(): void;
+}