diff --git a/src/软件电脑端/server/app.py b/src/软件电脑端/server/app.py
index 1ecd725..ef5cf2a 100644
--- a/src/软件电脑端/server/app.py
+++ b/src/软件电脑端/server/app.py
@@ -339,6 +339,7 @@ def auth_register():
         "unit": unit,
         "role": role
     }
+    save_accounts()  # 添加这一行
     return jsonify({"ok": True, "message": "注册成功"})
 
 
@@ -372,6 +373,27 @@ def get_accounts():
         ]
     })
 
+@app.route("/api/auth/change-password", methods=["POST"])
+def change_password():
+    data = request.get_json(force=True)
+    sid = data.get("soldier_id", "").strip()
+    old_pwd = data.get("old_password", "").strip()
+    new_pwd = data.get("new_password", "").strip()
+    
+    if not sid or not old_pwd or not new_pwd:
+        return jsonify({"ok": False, "error": "所有字段都不能为空"}), 400
+    
+    account = _accounts.get(sid)
+    if not account:
+        return jsonify({"ok": False, "error": "用户不存在"}), 404
+    
+    if account["password"] != old_pwd:
+        return jsonify({"ok": False, "error": "原密码错误"}), 401
+    
+    # 更新密码
+    account["password"] = new_pwd
+    save_accounts()  # 添加这一行
+    return jsonify({"ok": True, "message": "密码修改成功"})
 
 if __name__ == "__main__":
     import sys