diff --git a/app/src/main/assets/print_demo.html b/app/src/main/assets/print_demo.html
index 5715473..92818df 100644
--- a/app/src/main/assets/print_demo.html
+++ b/app/src/main/assets/print_demo.html
@@ -171,6 +171,15 @@
                     <input type="text" id="ptt-gid" class="ws-input" value="00000001">
                 </div>
             </div>
+            <div style="display: flex; gap: 8px;">
+                <div style="flex: 4;">
+                    <span class="ptt-label">AT 指令 (十六进制):</span>
+                    <input type="text" id="ptt-at-cmd" class="ws-input" placeholder="e.g. 0D0000">
+                </div>
+                <div style="flex: 1; display: flex; align-items: flex-end;">
+                    <button class="btn ptt-btn ptt-action-btn" style="background: #475569; height: 35px;" onclick="pttSendAtCmd()">发送</button>
+                </div>
+            </div>
         </div>
 
         <!-- PTT 核心对讲按钮 -->
@@ -767,6 +776,18 @@
             showPttResult("已触发模拟账号冲突");
         }
     }
+
+    function pttSendAtCmd() {
+        var cmd = document.getElementById('ptt-at-cmd').value.trim();
+        if (!cmd) {
+            showPttResult("请输入 AT 指令");
+            return;
+        }
+        if (window.android && window.android.pttSendAtCmd) {
+            window.android.pttSendAtCmd(cmd);
+            showPttResult("已发送 AT 指令: " + cmd);
+        }
+    }
 </script>
 </body>
 </html>
diff --git a/app/src/main/java/com/example/kingway/ptt/SendAtUtil.java b/app/src/main/java/com/example/kingway/ptt/SendAtUtil.java
index e25bd09..a39dd1d 100644
--- a/app/src/main/java/com/example/kingway/ptt/SendAtUtil.java
+++ b/app/src/main/java/com/example/kingway/ptt/SendAtUtil.java
@@ -7,11 +7,22 @@ import timber.log.Timber;
  * */
 public class SendAtUtil {
 
-    private static void send(String cmd) {
+    public static void sendRawCmd(String cmd) {
         Timber.tag("PTT_TX").i("CMD: %s", cmd);
         MyApplication.getAppInstance().getpNative().pttNativeSendAtCmd(cmd);
     }
 
+    private static void send(String cmd) {
+        sendRawCmd(cmd);
+    }
+
+    /**
+     * 账号注销接口
+     */
+    public static void toLogout() {
+        send("040000\r\n");
+    }
+
     /**
      * 账号登录接口
      * account 账号
diff --git a/app/src/main/java/com/stand/standapp/AndroidInterface.kt b/app/src/main/java/com/stand/standapp/AndroidInterface.kt
index 94efba3..925e635 100644
--- a/app/src/main/java/com/stand/standapp/AndroidInterface.kt
+++ b/app/src/main/java/com/stand/standapp/AndroidInterface.kt
@@ -101,6 +101,14 @@ class AndroidInterface(private val activity: MainActivity) {
         }
     }
 
+    /**
+     * 发送原始 AT 指令 (调试用)
+     */
+    @JavascriptInterface
+    fun pttSendAtCmd(cmd: String) {
+        SendAtUtil.sendRawCmd(cmd)
+    }
+
     /**
      * PTT 切换群组
      */
diff --git a/app/src/main/java/com/stand/standapp/LoginActivity.kt b/app/src/main/java/com/stand/standapp/LoginActivity.kt
index 0394ebb..08ca37f 100644
--- a/app/src/main/java/com/stand/standapp/LoginActivity.kt
+++ b/app/src/main/java/com/stand/standapp/LoginActivity.kt
@@ -131,15 +131,25 @@ class LoginActivity : AppCompatActivity() {
 
                             Toast.makeText(this@LoginActivity, "登录成功", Toast.LENGTH_SHORT).show()
 
-                            // 1. 确保 PTT 引擎已初始化并登录
+                            // 1. PTT 引擎初始化并异步登录 (避免阻塞 UI)
                             try {
-                                // 确保 PTT 引擎已初始化
                                 com.example.kingway.ptt.MyApplication.init(this@LoginActivity)
-                                // 异步初始化 PTT 登录 (区分 Android 业务登录)
-                                com.example.kingway.ptt.SendAtUtil.toLogin("gzzdweb01", "123456", "61.243.1.123", 1, 1)
+                                com.example.kingway.ptt.SendAtUtil.toLogout()
                             } catch (e: Exception) {
                                 Timber.tag("PTT").e(e, "PTT init error")
                             }
+                            Thread {
+                                try {
+                                    Thread.sleep(500)
+                                    runOnUiThread {
+                                        Toast.makeText(this@LoginActivity, "PTT初始化中", Toast.LENGTH_SHORT).show()
+                                    }
+                                    Thread.sleep(1500)
+                                    com.example.kingway.ptt.SendAtUtil.toLogin("gzzdweb01", "123456", "61.243.1.123", 1, 1)
+                                } catch (e: Exception) {
+                                    Timber.tag("PTT").e(e, "PTT login error")
+                                }
+                            }.start()
 
                             // 2. 启动硬件 GPIO 监听
                             try {