diff --git a/routes/bot_manager.py b/routes/bot_manager.py
index 7b828db..a77fbe4 100644
--- a/routes/bot_manager.py
+++ b/routes/bot_manager.py
@@ -4327,10 +4327,11 @@ async def list_subaccounts(authorization: Optional[str] = Header(None)):
 
     async with pool.connection() as conn:
         async with conn.cursor() as cursor:
+            # 只查真正的子账号，排除客户账号（is_end_user=TRUE 的也挂在 parent_id 下）
             await cursor.execute("""
                 SELECT id, username, email, is_active, created_at, last_login
                 FROM agent_user
-                WHERE parent_id = %s
+                WHERE parent_id = %s AND is_subaccount = TRUE
                 ORDER BY created_at DESC
             """, (user_id,))
             rows = await cursor.fetchall()
@@ -4377,9 +4378,10 @@ async def delete_subaccount(
 
     async with pool.connection() as conn:
         async with conn.cursor() as cursor:
-            # 验证子账号属于当前用户
+            # 验证子账号属于当前用户（且确实是子账号，避免误删客户账号）
             await cursor.execute("""
-                SELECT parent_id FROM agent_user WHERE id = %s
+                SELECT parent_id FROM agent_user
+                WHERE id = %s AND is_subaccount = TRUE
             """, (subaccount_id,))
             row = await cursor.fetchone()