diff --git a/Assets/Plugins/Android/unityandroidbluetoothlelib.jar b/Assets/Plugins/Android/unityandroidbluetoothlelib.jar
index 21f7f248..8731dae3 100644
Binary files a/Assets/Plugins/Android/unityandroidbluetoothlelib.jar and b/Assets/Plugins/Android/unityandroidbluetoothlelib.jar differ
diff --git a/Assets/Plugins/BluetoothDeviceScript.cs b/Assets/Plugins/BluetoothDeviceScript.cs
index 14d1b0d6..7685952f 100644
--- a/Assets/Plugins/BluetoothDeviceScript.cs
+++ b/Assets/Plugins/BluetoothDeviceScript.cs
@@ -24,6 +24,7 @@ public class BluetoothDeviceScript : MonoBehaviour
 	public Action<string, byte[]> PeripheralReceivedWriteDataAction;
 	public Action<string> ConnectedPeripheralAction;
 	public Action<string> ConnectedDisconnectPeripheralAction { get; set; }
+	public Action<string,string> ConnectErrorAction { get; set; }
 	public Action<string> DisconnectedPeripheralAction;
 	public Action<string> DeviceBleStatusDisconnectedAction;
 	public Action<string, string> DiscoveredServiceAction;
@@ -53,10 +54,11 @@ public class BluetoothDeviceScript : MonoBehaviour
     void Update ()
 	{
 	}
-
+	const string connectionError = "ConnectionError";
 	const string deviceInitializedString = "Initialized";
 	const string deviceDeInitializedString = "DeInitialized";
 	const string deviceErrorString = "Error";
+	const string deviceConnectErrorString = "ConnectionError";
 	const string deviceServiceAdded = "ServiceAdded";
 	const string deviceStartedAdvertising = "StartedAdvertising";
 	const string deviceStoppedAdvertising = "StoppedAdvertising";
@@ -77,6 +79,7 @@ public class BluetoothDeviceScript : MonoBehaviour
 
 	public void OnBluetoothMessage (string message)
 	{
+		Debug.Log(message);
 		if (message != null)
 		{
 			char[] delim = new char[] { '~' };
@@ -242,6 +245,10 @@ public class BluetoothDeviceScript : MonoBehaviour
                         DisconnectedPeripheralAction(parts[1]);
                 }
 			}
+			else if (message.Length > connectionError.Length && message.Substring(0,connectionError.Length) == connectionError){
+				if (ConnectErrorAction != null)
+					ConnectErrorAction(parts[1], parts[2]);
+			}
 			else if (message.Length >= deviceDiscoveredService.Length && message.Substring (0, deviceDiscoveredService.Length) == deviceDiscoveredService)
 			{
 				if (parts.Length >= 3 && DiscoveredServiceAction != null)
diff --git a/Assets/Plugins/BluetoothHardwareInterface.cs b/Assets/Plugins/BluetoothHardwareInterface.cs
index 14b9cf82..93c85514 100644
--- a/Assets/Plugins/BluetoothHardwareInterface.cs
+++ b/Assets/Plugins/BluetoothHardwareInterface.cs
@@ -604,7 +604,7 @@ public class BluetoothLEHardwareInterface
 #endif
 	}
 
-	public static void ConnectToPeripheral (string name, Action<string> connectAction, Action<string, string> serviceAction, Action<string, string, string> characteristicAction, Action<string> disconnectAction = null)
+	public static void ConnectToPeripheral (string name, Action<string> connectAction, Action<string, string> serviceAction, Action<string, string, string> characteristicAction, Action<string> disconnectAction = null, Action<string,string> errorAction = null)
 	{
 
 #if !UNITY_EDITOR_OSX || !EXPERIMENTAL_MACOS_EDITOR
@@ -618,6 +618,7 @@ public class BluetoothLEHardwareInterface
 				bluetoothDeviceScript.DiscoveredCharacteristicAction = characteristicAction;
 				bluetoothDeviceScript.ConnectedDisconnectPeripheralAction = disconnectAction;
 				bluetoothDeviceScript.DeviceBleStatusDisconnectedAction = disconnectAction;
+				bluetoothDeviceScript.ConnectErrorAction = errorAction;
 			}
 
 #if EXPERIMENTAL_MACOS_EDITOR && (UNITY_EDITOR_OSX || UNITY_STANDALONE_OSX)
diff --git a/Assets/Scripts/Devices/Ble/BleDevice.cs b/Assets/Scripts/Devices/Ble/BleDevice.cs
index cccf4679..7228e351 100644
--- a/Assets/Scripts/Devices/Ble/BleDevice.cs
+++ b/Assets/Scripts/Devices/Ble/BleDevice.cs
@@ -106,6 +106,7 @@ namespace Assets.Scripts.Devices.Ble
 
             if (response.Error != null)
             {
+                this.State = DeviceState.Disconnected;
                 if (response.Error.Code == WclBleErrors.WCL_E_BLUETOOTH_LE_DEVICE_NOT_FOUND)
                 {
                     Debug.Log("未找到设备");
diff --git a/Assets/Scripts/Devices/Ble/mobile/BleMobileInterface.cs b/Assets/Scripts/Devices/Ble/mobile/BleMobileInterface.cs
index 58d55173..b2c1a994 100644
--- a/Assets/Scripts/Devices/Ble/mobile/BleMobileInterface.cs
+++ b/Assets/Scripts/Devices/Ble/mobile/BleMobileInterface.cs
@@ -9,6 +9,7 @@ using System.Collections.Generic;
 using System.Linq;
 using System.Text;
 using System.Threading.Tasks;
+using System.Timers;
 using UnityEngine;
 
 namespace Assets.Scripts.Ble
@@ -210,30 +211,41 @@ namespace Assets.Scripts.Ble
 
         List<BleServiceInfo> servicelist = new List<BleServiceInfo>();
         List<BleCharacteristicInfo> characteristilist = new List<BleCharacteristicInfo>();
+
         public void ConnectPeripheral(BlePeripheralInfo info, Action<IBleWinHwInterface, BlePeripheralInfo, BleResponse> callback)
         {
-            if (!this.callbacks.ContainsKey(info))
+            var exsit = this.callbacks.Where(c => c.Key.Address == info.Address).Any();
+            if (!exsit)
             {
                 this.callbacks.Add(info, callback);
             }
+            else
+            {
+                var obj = this.callbacks.Where(c => c.Key.Address == info.Address).FirstOrDefault();
+                this.callbacks.Remove(obj.Key);
+                this.callbacks.Add(info, callback);
+            }
             Debug.Log("try connect device" + info.Name + this.callbacks.Count.ToString());
+            var self = this;
             if (this.callbacks.Count == 1)
             {
-                BleResponse s = new BleResponse();
-                s.IsSuccess = true;
-                s.Error = null;
-                var self = this;
                 BluetoothLEHardwareInterface.ConnectToPeripheral(info.Address, (address) =>
                 {
+                    BleResponse s = new BleResponse
+                    {
+                        IsSuccess = true,
+                        Error = null
+                    };
                     callback?.Invoke(self, info, s);
                     this.callbacks.Remove(info);
-                    Debug.Log("连接成功!"+info.Name);
+                    Debug.Log("连接成功!" + info.Name);
                     if (this.callbacks.Any())
                     {
                         this.ConnectPeripheral(this.callbacks.First().Key, this.callbacks.First().Value);
                     }
                 }, (address, service) =>
                 {
+                    Debug.Log("发现服务");
                     ServicesDiscovered(address, service);
                 }, (address, service, characteristic) =>
                 {
@@ -242,9 +254,25 @@ namespace Assets.Scripts.Ble
                 {
                     Debug.Log("disconnect device:" + address);
                     PeripheralDisconnected(address, info);
-                });
+                },
+                (address, error) =>
+                {
+                    BleResponse s = new BleResponse
+                    {
+                        IsSuccess = false,
+                        Error = new BleHwInterfaceError(error)
+                    };
+                    callback?.Invoke(self, info, s);
+                    this.callbacks.Remove(info);
+                    if (this.callbacks.Any())
+                    {
+                        this.ConnectPeripheral(this.callbacks.First().Key, this.callbacks.First().Value);
+                    }
+                }
+                );
             }
         }
+ 
         #region 私有方法
         //服务发现
         private void ServicesDiscovered(string address, string service)
@@ -305,7 +333,7 @@ namespace Assets.Scripts.Ble
             }
 
             var characteristicsDiscoveredCallback = characteristicsDiscoveredCallbacks.Where(c => c.Key.MatchAddress(address));
-            if (serviceCallback.Any())
+            if (characteristicsDiscoveredCallback.Any())
             {
                 characteristicsDiscoveredCallbacks.Remove(characteristicsDiscoveredCallback.First().Key);
             }