diff --git a/app/src/main/java/com/ouxuan/oxface/device/OxUDP.java b/app/src/main/java/com/ouxuan/oxface/device/OxUDP.java
index 1e3dc62..7171c04 100644
--- a/app/src/main/java/com/ouxuan/oxface/device/OxUDP.java
+++ b/app/src/main/java/com/ouxuan/oxface/device/OxUDP.java
@@ -50,6 +50,11 @@ public class OxUDP {
     private boolean isInitialized = false;
     private boolean isPolling = false;
     
+    // 门状态缓存（用于状态变化检测）
+    private boolean lastGateAState = false;
+    private boolean lastGateBState = false;
+    private boolean isFirstStateUpdate = true;
+    
     // 线程管理
     private ExecutorService executorService;
     private ScheduledExecutorService scheduledExecutor;
@@ -438,7 +443,23 @@ public class OxUDP {
             // Log.d(TAG, "门禁状态 - A门: " + (gateAState ? "开启" : "关闭") + 
             //           ", B门: " + (gateBState ? "开启" : "关闭"));
             
-            notifyGateStateUpdate(gateAState, gateBState, response);
+            // 检查状态是否发生变化，只有变化时才通知监听器
+            if (isFirstStateUpdate || gateAState != lastGateAState || gateBState != lastGateBState) {
+                Log.i(TAG, "门禁状态变化 - A门: " + (lastGateAState ? "开启" : "关闭") + " -> " + (gateAState ? "开启" : "关闭") + 
+                          ", B门: " + (lastGateBState ? "开启" : "关闭") + " -> " + (gateBState ? "开启" : "关闭"));
+                
+                // 更新状态缓存
+                lastGateAState = gateAState;
+                lastGateBState = gateBState;
+                isFirstStateUpdate = false;
+                
+                // 通知监听器状态变化
+                notifyGateStateUpdate(gateAState, gateBState, response);
+            } else {
+                // 状态无变化，不通知监听器，只记录调试日志
+                // Log.d(TAG, "门禁状态无变化 - A门: " + (gateAState ? "开启" : "关闭") + 
+                //           ", B门: " + (gateBState ? "开启" : "关闭"));
+            }
             
         } catch (Exception e) {
             Log.e(TAG, "解析门禁状态失败", e);