diff --git a/coder-common-thin-modules/coder-common-thin-system/src/main/java/org/leocoder/thin/system/service/dashboard/DashboardServiceImpl.java b/coder-common-thin-modules/coder-common-thin-system/src/main/java/org/leocoder/thin/system/service/dashboard/DashboardServiceImpl.java
index 647b98c..2b84b4b 100644
--- a/coder-common-thin-modules/coder-common-thin-system/src/main/java/org/leocoder/thin/system/service/dashboard/DashboardServiceImpl.java
+++ b/coder-common-thin-modules/coder-common-thin-system/src/main/java/org/leocoder/thin/system/service/dashboard/DashboardServiceImpl.java
@@ -152,17 +152,20 @@ public class DashboardServiceImpl implements DashboardService {
             );
 
             // 活跃用户数（最近30天有登录记录的用户）
+            // 使用原生SQL统计不重复的登录用户数
             LambdaQueryWrapper<SysLoginLog> activeWrapper =
                 new LambdaQueryWrapper<>();
             activeWrapper
                 .apply("login_time >= DATE_SUB(NOW(), INTERVAL 30 DAY)")
-                .eq(SysLoginLog::getLoginStatus, "0")
-                .select(SysLoginLog::getLoginName)
-                .groupBy(SysLoginLog::getLoginName);
-            Long activeUsers = sysLoginLogMapper.selectCount(activeWrapper);
-            userStats.setActiveUsers(
-                activeUsers != null ? activeUsers.intValue() : 0
-            );
+                .eq(SysLoginLog::getLoginStatus, "0");
+            
+            // 获取符合条件的登录记录，然后统计不重复的用户名
+            List<SysLoginLog> loginLogs = sysLoginLogMapper.selectList(activeWrapper);
+            long activeUsers = loginLogs.stream()
+                .map(SysLoginLog::getLoginName)
+                .distinct()
+                .count();
+            userStats.setActiveUsers((int) activeUsers);
 
             // 当前在线用户数（通过Sa-Token获取）
             List<String> onlineTokens = StpUtil.searchTokenValue(