diff --git a/Assets/Scripts/Dialog System/LineSyncToken.cs b/Assets/Scripts/Dialog System/LineSyncToken.cs
index 749f4d14b..ee3b5f69c 100644
--- a/Assets/Scripts/Dialog System/LineSyncToken.cs	
+++ b/Assets/Scripts/Dialog System/LineSyncToken.cs	
@@ -128,6 +128,15 @@ namespace AibisDream
 
         public async void TextShown()
         {
+            // UI completion events can arrive more than once (for example, when a typewriter is
+            // reused or a previous line finishes late). Only the active PlayText state is allowed
+            // to enter the post-display delay; otherwise a stale callback could regress a token
+            // from Advanced, or run before TextStart and corrupt the line lifecycle.
+            if (state != LineSyncState.PlayText)
+            {
+                return;
+            }
+
             AdvanceDelayToken = new CancellationTokenSource();
             EnumEventSystem.Global.Send(DialogEventEnum.LineShown);
             await _textShown.OnTextShown(this);
diff --git a/Assets/Scripts/FixSystemNew/Screen System/FixPanel/ScreenPanel.cs b/Assets/Scripts/FixSystemNew/Screen System/FixPanel/ScreenPanel.cs
index ef22478a9..897de43cb 100644
--- a/Assets/Scripts/FixSystemNew/Screen System/FixPanel/ScreenPanel.cs	
+++ b/Assets/Scripts/FixSystemNew/Screen System/FixPanel/ScreenPanel.cs	
@@ -43,6 +43,7 @@ namespace AibisDream.FixSystem
             {
                 EnumEventSystem.Global.Send(ScreenEventEnum.Selected, gameObject);
 
+                logText.PrepareForLine();
                 logText.OnTextShown += () => token.TextShown();
 
                 bool isWarning = string.Equals(token.lineInfo.character.key, WarningCharacterKey,
@@ -52,8 +53,8 @@ namespace AibisDream.FixSystem
                 title.color = isWarning ? WarningRedColor : AmberColor;
                 title.text = token.lineInfo.character.GetActorName();
                 logText.SetTypewriterSpeed(GetTextSpeedValue());
-                logText.AddText(token.lineInfo.lineText);
                 token.TextStart();
+                logText.AddText(token.lineInfo.lineText);
             }
             else
             {
diff --git a/Assets/Scripts/SceneManagement/SceneCenter/SubwayCenter.cs b/Assets/Scripts/SceneManagement/SceneCenter/SubwayCenter.cs
index 82d39793c..471a43854 100644
--- a/Assets/Scripts/SceneManagement/SceneCenter/SubwayCenter.cs
+++ b/Assets/Scripts/SceneManagement/SceneCenter/SubwayCenter.cs
@@ -205,6 +205,7 @@ namespace AibisDream
             }
             
             yield return SubwayCenter.StateMachine.SwitchState(targetState);
+            yield return null;
         }
 
         [YarnCommand("arrive_at_station")]
diff --git a/Assets/Scripts/UI/Components/TerminalText.cs b/Assets/Scripts/UI/Components/TerminalText.cs
index a56123cd5..016b8cc1e 100644
--- a/Assets/Scripts/UI/Components/TerminalText.cs
+++ b/Assets/Scripts/UI/Components/TerminalText.cs
@@ -135,6 +135,20 @@ namespace AibisDream.UI
 
         #region 公共方法
 
+        /// <summary>
+        /// 在注册新台词完成回调前停止旧动画，并丢弃可能迟到的旧回调。
+        /// 保留终端中已经显示的历史文本。
+        /// </summary>
+        public void PrepareForLine()
+        {
+            if (typewriter != null)
+            {
+                typewriter.StopShowingText();
+            }
+
+            OnTextShown = null;
+        }
+
         /// <summary>
         /// 添加新文本（追加到现有文本）
         /// </summary>
diff --git a/Assets/Scripts/UI/DialogUI/Bubbles/Bubble.cs b/Assets/Scripts/UI/DialogUI/Bubbles/Bubble.cs
index a19a40e58..758bcea8c 100644
--- a/Assets/Scripts/UI/DialogUI/Bubbles/Bubble.cs
+++ b/Assets/Scripts/UI/DialogUI/Bubbles/Bubble.cs
@@ -45,6 +45,11 @@ namespace AibisDream
             _bubbleGroup = bubbleGroup;
             InitRefs();
 
+            // Dialogue playback is started explicitly by BubbleGroup. OnEnable playback can
+            // resume fully displayed text when a pooled bubble is reactivated and synchronously
+            // emit onTextShowed for the wrong line.
+            _typewriter.startTypewriterMode = TypewriterCore.StartTypewriterMode.OnShowText;
+
             role = data.actorRole;
             idx = data.idx;
             maxWidth = data.maxWidth;
@@ -119,10 +124,16 @@ namespace AibisDream
                 : characterVo.GetActorName();
         }
 
+        public void PrepareForLine()
+        {
+            _typewriter.StopShowingText();
+            OnLineShown = null;
+            gameObject.SetActive(true);
+            _typewriter.TextAnimator.SetText(string.Empty);
+        }
+
         public void ShowLine(string line)
         {
-            _typewriter.TextAnimator.SetText("");
-            gameObject.SetActive(true);
             HandleLayout(line);
             _typewriter.ShowText(line);
         }
@@ -215,9 +226,10 @@ namespace AibisDream
         public int Idx { get; }
 
         public event Action OnLineShown;
+        public void PrepareForLine();
         public void ShowActorName(CharacterVo characterVo);
         public void ShowLine(string line);
         public bool SkipLine();
         public void Hide();
     }
-}
\ No newline at end of file
+}
diff --git a/Assets/Scripts/UI/DialogUI/Bubbles/BubbleGroup.cs b/Assets/Scripts/UI/DialogUI/Bubbles/BubbleGroup.cs
index 2857b0918..803c62f27 100644
--- a/Assets/Scripts/UI/DialogUI/Bubbles/BubbleGroup.cs
+++ b/Assets/Scripts/UI/DialogUI/Bubbles/BubbleGroup.cs
@@ -73,14 +73,19 @@ namespace AibisDream
             
             if (TryGetBubble(character.role, character.bubbleIdx, out var bubble))
             {
+                // Stop the previous typewriter and remove its completion callback before the new
+                // token is registered. A forcibly advanced line may otherwise finish late and
+                // complete the next token.
+                bubble.PrepareForLine();
+
                 // 注册事件
                 bubble.OnLineShown += syncToken.TextShown;
                 syncToken.SkipTextAnima += () => bubble.SkipLine();
                 syncToken.OnAdvance += AfterAdvance;
                 // 播放文字
                 bubble.ShowActorName(character);
-                bubble.ShowLine(syncToken.lineInfo.lineText);
                 syncToken.TextStart();
+                bubble.ShowLine(syncToken.lineInfo.lineText);
                 // 将非选定的Bubble隐藏
                 HideDialog(bubble);
             }
@@ -138,4 +143,4 @@ namespace AibisDream
 
         #endregion
     }
-}
\ No newline at end of file
+}
diff --git a/Assets/Scripts/UI/DialogUI/CenterText.cs b/Assets/Scripts/UI/DialogUI/CenterText.cs
index 612f4b1e3..b2653ac09 100644
--- a/Assets/Scripts/UI/DialogUI/CenterText.cs
+++ b/Assets/Scripts/UI/DialogUI/CenterText.cs
@@ -24,6 +24,13 @@ namespace AibisDream
             // 先中断结束事件
             _autoHideToken?.Cancel();
             _autoHideToken = null;
+            OnTextShowed = null;
+
+            // 先停止旧动画并准备好激活状态，避免 OnEnable 或旧动画完成事件命中新 token。
+            content.StopShowingText();
+            box.SetActive(true);
+            content.StopShowingText();
+            content.TextAnimator.SetText(string.Empty);
 
             // 注册事件
             OnTextShowed += syncToken.TextShown;
@@ -31,10 +38,8 @@ namespace AibisDream
             syncToken.OnAdvance += AfterAdvance;
 
             // 播放文字
-            content.TextAnimator.SetText(string.Empty);
-            box.SetActive(true);
-            content.ShowText(syncToken.lineInfo.lineText);
             syncToken.TextStart();
+            content.ShowText(syncToken.lineInfo.lineText);
         }
 
         private async void AfterAdvance()
@@ -109,4 +114,4 @@ namespace AibisDream
             HideDialog();
         }
     }
-}
\ No newline at end of file
+}