diff --git a/src/types/index.ts b/src/types/index.ts
new file mode 100644
index 0000000..e5a3967
--- /dev/null
+++ b/src/types/index.ts
@@ -0,0 +1,57 @@
+// 模型类型
+export interface Model {
+  id: string;
+  name: string;
+  tag: string;
+}
+
+// 工具类型
+export interface Tool {
+  id: string;
+  name: string;
+  icon: string;
+  enabled: boolean;
+}
+
+// 聊天记录类型
+export interface ChatHistory {
+  id: string;
+  title: string;
+  createdAt: Date;
+  updatedAt: Date;
+}
+
+// 消息类型
+export interface Message {
+  id: string;
+  role: 'user' | 'assistant';
+  content: string;
+  timestamp: Date;
+}
+
+// 用户类型
+export interface User {
+  id: string;
+  email: string;
+  name: string;
+  plan: 'free' | 'pro' | 'enterprise';
+  avatar?: string;
+}
+
+// 设置类型
+export interface Settings {
+  defaultModel: string;
+  theme: 'light' | 'dark' | 'system';
+  language: string;
+  webSearchEnabled: boolean;
+  codeExecutionEnabled: boolean;
+  chatHistoryEnabled: boolean;
+}
+
+// 快捷操作类型
+export interface QuickAction {
+  id: string;
+  label: string;
+  icon: string;
+  prompt?: string;
+}