diff --git a/Frontend/Pages/Editor.razor b/Frontend/Pages/Editor.razor
index 9e2862a..dc0bec8 100644
--- a/Frontend/Pages/Editor.razor
+++ b/Frontend/Pages/Editor.razor
@@ -10,7 +10,7 @@
             <div class="control-zone">
                 <Space Size="@("0")">
                     <SpaceItem>
-                        <Button Type="@ButtonType.Text">
+                        <Button Type="@ButtonType.Text" OnClick="@QuitButtontClicked">
                             退出
                         </Button>
                     </SpaceItem>
@@ -28,7 +28,9 @@
 
             <div class="logging-zone">
                 <AntList TItem="@string" DataSource="@_logs" Split="@false" @ref="@_logList">
-                    <p style="margin-bottom: 0">@context</p>
+                    <ListItem class="logging-item">
+                        <p>@context</p>
+                    </ListItem>
                 </AntList>
             </div>
         </div>
@@ -60,7 +62,7 @@
             Log("未设置文法");
             grammarText = string.Empty;
         }
-        
+
         return new StandaloneEditorConstructionOptions
         {
             Language = "yaml",
@@ -84,10 +86,14 @@
         }
     }
 
+    private void QuitButtontClicked()
+    {
+        Navigation.NavigateTo("/", replace: true);
+    }
+
     private void Log(string message)
     {
         _logs.Add($"{DateTime.Now:HH:mm:ss} {message}");
         StateHasChanged();
-    }
-
+    }   
 }
\ No newline at end of file
diff --git a/Frontend/Pages/Editor.razor.css b/Frontend/Pages/Editor.razor.css
index d357ec7..d7dd876 100644
--- a/Frontend/Pages/Editor.razor.css
+++ b/Frontend/Pages/Editor.razor.css
@@ -10,4 +10,9 @@
 .logging-zone {
     height: 15%;
     overflow-y: auto;
+    margin-bottom: 5px;
+}
+
+.logging-item {
+    padding: 0 0 0;
 }
\ No newline at end of file
diff --git a/Frontend/Properties/launchSettings.json b/Frontend/Properties/launchSettings.json
index bc94732..dd9e2bc 100644
--- a/Frontend/Properties/launchSettings.json
+++ b/Frontend/Properties/launchSettings.json
@@ -11,6 +11,7 @@
       "dotnetRunMessages": true,
       "launchBrowser": false,
       "applicationUrl": "http://localhost:5163",
+      "inspectUri": "{wsProtocol}://{url.hostname}:{url.port}/_framework/debug/ws-proxy?browser={browserInspectUri}",
       "environmentVariables": {
         "ASPNETCORE_ENVIRONMENT": "Development"
       }
diff --git a/Katheryne/Services/KatheryneChatRobotFactory.cs b/Katheryne/Services/KatheryneChatRobotFactory.cs
index 2d31c87..157227d 100644
--- a/Katheryne/Services/KatheryneChatRobotFactory.cs
+++ b/Katheryne/Services/KatheryneChatRobotFactory.cs
@@ -1,4 +1,5 @@
 using Katheryne.Abstractions;
+using Katheryne.Exceptions;
 using Katheryne.Models;
 using Microsoft.Extensions.Logging;
 using YamlDotNet.Serialization;
@@ -27,13 +28,26 @@ public class KatheryneChatRobotFactory
         _defaultChatRobot = defaultChatRobot;
     }
 
+    /// <summary>
+    /// ÉèÖõ±Ç°»úÆ÷ÈËʹÓõÄÎÄ·¨
+    /// </summary>
+    /// <param name="grammarText">ÎÄ·¨×Ö·û´®</param>
+    /// <exception cref="GrammarException">±àÒëÎÄ·¨Ê§°ÜÅ׳öµÄÒì³£</exception>
     public void SetGrammar(string grammarText)
     {
         _factoryLogger.LogInformation("Receive new grammar: {}.", grammarText);
         GrammarText = grammarText;
         IDeserializer deserializer = _deserializerFactory.GetDeserializer();
 
-        LexicalModel model = deserializer.Deserialize<LexicalModel>(grammarText);
+        LexicalModel model;
+        try
+        {
+            model = deserializer.Deserialize<LexicalModel>(grammarText);
+        }
+        catch (Exception ex)
+        {
+            throw new GrammarException("Failed to parse lexical model.", ex);
+        }
         _grammar = new Grammar(new GrammarTree(model), model.RobotName, model.BeginStageName);
     }