diff --git a/Data/Entities/DbMqtt.cs b/Data/Entities/DbMqtt.cs
index d8ac213..c124d93 100644
--- a/Data/Entities/DbMqtt.cs
+++ b/Data/Entities/DbMqtt.cs
@@ -49,7 +49,7 @@ public class DbMqtt
     /// <summary>
     /// MQTT客户端登录密码。
     /// </summary>
-    [SugarColumn(IsIgnore = true)]
+    [SugarColumn(IsNullable = true)]
     public string PassWord { get; set; } = String.Empty;
 
     /// <summary>
@@ -66,25 +66,25 @@ public class DbMqtt
     /// <summary>
     /// MQTT发布主题。
     /// </summary>
-    [SugarColumn(IsIgnore = true)]
+    [SugarColumn(IsNullable = true)]
     public string PublishTopic { get; set; } = String.Empty;
 
     /// <summary>
     /// MQTT备注。
     /// </summary>
-    [SugarColumn(IsIgnore = true)]
+    [SugarColumn(IsNullable = true)]
     public string Remark { get; set; } = String.Empty;
 
     /// <summary>
     /// MQTT订阅主题。
     /// </summary>
-    [SugarColumn(IsIgnore = true)]
-    public string SubTopics { get; set; } = String.Empty;
+    [SugarColumn(IsNullable = true)]
+    public string SubTopic { get; set; } = String.Empty;
 
     /// <summary>
     /// MQTT客户端登录用户名。
     /// </summary>
-    [SugarColumn(IsIgnore = true)]
+    [SugarColumn(IsNullable = true)]
     public string UserName { get; set; } = String.Empty;
 
     /// <summary>
diff --git a/Models/Mqtt.cs b/Models/Mqtt.cs
index 2135e6d..61ecc0e 100644
--- a/Models/Mqtt.cs
+++ b/Models/Mqtt.cs
@@ -72,7 +72,7 @@ public partial class Mqtt : ObservableObject
     /// <summary>
     /// MQTT订阅主题。
     /// </summary>
-    public string SubTopics { get; set; }
+    public string SubTopic { get; set; }
 
     /// <summary>
     /// MQTT客户端登录用户名。
diff --git a/Services/MqttBackgroundService.cs b/Services/MqttBackgroundService.cs
index 7d28aed..c0efaaa 100644
--- a/Services/MqttBackgroundService.cs
+++ b/Services/MqttBackgroundService.cs
@@ -161,8 +161,8 @@ namespace PMSWPF.Services
                         mqtt.IsConnected = true;
                         
                         // 订阅主题
-                        await client.SubscribeAsync(new MqttTopicFilterBuilder().WithTopic("test").Build());
-                        NlogHelper.Info($"MQTT客户端 {mqtt.Name} 已订阅主题: {mqtt.SubTopics}");
+                        await client.SubscribeAsync(new MqttTopicFilterBuilder().WithTopic(mqtt.SubTopic).Build());
+                        NlogHelper.Info($"MQTT客户端 {mqtt.Name} 已订阅主题: {mqtt.SubTopic}");
                     });
 
                     // 设置接收消息处理程序
@@ -183,6 +183,8 @@ namespace PMSWPF.Services
                         // 服务停止
                         if (_stopEvent.WaitOne(0))
                             return;
+                        if (!mqtt.IsActive)
+                            return;
                         
                         NlogHelper.Info($"5秒后重新连接Mqtt服务器：{mqtt.Name}");
                         // 尝试重新连接。
diff --git a/Views/Dialogs/MqttDialog.xaml b/Views/Dialogs/MqttDialog.xaml
index 7752a40..5191a43 100644
--- a/Views/Dialogs/MqttDialog.xaml
+++ b/Views/Dialogs/MqttDialog.xaml
@@ -68,7 +68,7 @@
             <TextBlock Text="订阅主题"
                        HorizontalAlignment="Left"
                        Style="{StaticResource TextBlockSubTitle}" />
-            <TextBox Text="{Binding Mqtt.SubTopics, UpdateSourceTrigger=PropertyChanged}" />
+            <TextBox Text="{Binding Mqtt.SubTopic, UpdateSourceTrigger=PropertyChanged}" />
             <CheckBox FontSize="16"
                       Content="是否设为默认"
                       Margin="0 30 0 0"
diff --git a/Views/MqttsView.xaml b/Views/MqttsView.xaml
index f921381..46b35fa 100644
--- a/Views/MqttsView.xaml
+++ b/Views/MqttsView.xaml
@@ -126,7 +126,7 @@
                                          VerticalAlignment="Center"
                                          Margin="0,0,8,0"
                                          FontSize="14" />
-                            <TextBlock Text="{Binding SubTopics}" />
+                            <TextBlock Text="{Binding SubTopic}" />
                         </StackPanel>
                         <StackPanel Orientation="Horizontal"
                                     Margin="0,2">