diff --git a/Assets/Scripts/Dialog System/DialogController.cs b/Assets/Scripts/Dialog System/DialogController.cs
index 0ba7b236a..945090d2b 100644
--- a/Assets/Scripts/Dialog System/DialogController.cs	
+++ b/Assets/Scripts/Dialog System/DialogController.cs	
@@ -87,6 +87,7 @@ namespace AibisDream
         /// <param name="yarnProject">Yarn组</param>
         public void StartDialog(YarnProject yarnProject)
         {
+            PrepareYarnProjectForDialog(yarnProject);
             _dialogueRunner.SetProject(yarnProject);
             _ = _dialogueRunner.StartDialogue("Start");
         }
@@ -94,14 +95,21 @@ namespace AibisDream
         public void StopDialog()
         {
             _ = _dialogueRunner.Stop();
+            SavePointEvaluator.ResetForProject(null);
             YarnVariableStorage.Instance.Clear();
             DialogUIManager.Instance.HideDialog();
         }
 
         public void LoadDialog(YarnProject yarnProject)
         {
+            PrepareYarnProjectForDialog(yarnProject);
             _dialogueRunner.SetProject(yarnProject);
-            _ = _dialogueRunner.StartDialogue("Center");
+        }
+
+        private static void PrepareYarnProjectForDialog(YarnProject yarnProject)
+        {
+            var projectId = yarnProject != null ? yarnProject.name : null;
+            SavePointEvaluator.ResetForProjectIfChanged(projectId);
         }
 
         public void StartDialogNode(string nodeName)
@@ -163,8 +171,22 @@ namespace AibisDream
         {
             UpdateCurrentNodeContext(nodeName);
 
-            if (!SavePointEvaluator.CanAutoSave(out _))
+            var projectId = _dialogueRunner?.YarnProject?.name;
+            var tags = _currentNodeTags ?? Array.Empty<string>();
+
+            if (SaveRestoreOrchestrator.IsRestoring)
             {
+                SavePointEvaluator.OnRestoreEnterNode(projectId, nodeName);
+                return;
+            }
+
+            if (!SavePointEvaluator.OnNodeStartForAutoSave(projectId, nodeName, tags, out var reason))
+            {
+                if (reason == SavePointRejectReason.DetourResume)
+                {
+                    Debug.Log($"[DialogController] 跳过 detour 返回续跑的自动存档: {nodeName}");
+                }
+
                 return;
             }
 
@@ -173,6 +195,7 @@ namespace AibisDream
 
         private void OnNodeComplete(string nodeName)
         {
+            SavePointEvaluator.OnNodeComplete(_dialogueRunner?.YarnProject?.name, nodeName);
             ClearCurrentNodeContext();
         }
 
diff --git a/Assets/Scripts/SaveSystem/SavePointEvaluator.cs b/Assets/Scripts/SaveSystem/SavePointEvaluator.cs
index bb15684b3..edd87fe07 100644
--- a/Assets/Scripts/SaveSystem/SavePointEvaluator.cs
+++ b/Assets/Scripts/SaveSystem/SavePointEvaluator.cs
@@ -25,6 +25,9 @@ namespace AibisDream.SaveSystem
 
         /// <summary>节点显式附加了 no_save 标记。</summary>
         MarkedNoSave,
+
+        /// <summary>同一节点仍在执行中（detour 返回续跑），非 Fresh 进入。</summary>
+        DetourResume,
     }
 
     /// <summary>
@@ -37,6 +40,10 @@ namespace AibisDream.SaveSystem
     /// - 无活跃节点、或节点未声明 tag，默认允许并打 warning；
     /// - 未知 tag 默认允许并打 warning。
     /// </para>
+    /// <para>
+    /// OnNodeStart 自动档另按 YarnProject 维度跟踪 InProgress 节点：
+    /// detour 返回父节点会再次 onNodeStart，若该节点尚未 onNodeComplete 则视为 DetourResume，不自动存。
+    /// </para>
     /// </summary>
     public static class SavePointEvaluator
     {
@@ -61,6 +68,93 @@ namespace AibisDream.SaveSystem
             "end",         // 维修结束/收尾
         };
 
+        private static string _activeProjectId;
+        private static readonly HashSet<string> InProgressNodes = new(StringComparer.Ordinal);
+
+        /// <summary>当前 YarnProject 下尚未 Complete 的节点名（只读，供调试）。</summary>
+        public static IReadOnlyCollection<string> InProgressNodeNames => InProgressNodes;
+
+        /// <summary>切换 YarnProject 或停止对话时重置 InProgress 跟踪。</summary>
+        public static void ResetForProject(string projectId)
+        {
+            InProgressNodes.Clear();
+            _activeProjectId = projectId;
+        }
+
+        /// <summary>仅在 projectId 变化时重置，避免同 Project 内误清 InProgress。</summary>
+        public static void ResetForProjectIfChanged(string projectId)
+        {
+            if (string.Equals(_activeProjectId, projectId, StringComparison.Ordinal))
+            {
+                return;
+            }
+
+            ResetForProject(projectId);
+        }
+
+        /// <summary>读档重进 anchor：标记 InProgress，不写盘。</summary>
+        public static void OnRestoreEnterNode(string projectId, string nodeName)
+        {
+            if (string.IsNullOrEmpty(nodeName))
+            {
+                return;
+            }
+
+            EnsureProjectScope(projectId);
+            InProgressNodes.Add(nodeName);
+        }
+
+        /// <summary>
+        /// OnNodeStart 自动档判定：Fresh 进入且 tag 通过则允许；detour 返回续跑则拒绝。
+        /// </summary>
+        public static bool OnNodeStartForAutoSave(
+            string projectId,
+            string nodeName,
+            IReadOnlyList<string> tags,
+            out SavePointRejectReason reason)
+        {
+            if (!TryPassGlobalSaveGuards(out reason))
+            {
+                return false;
+            }
+
+            EnsureProjectScope(projectId);
+
+            if (!string.IsNullOrEmpty(nodeName) && InProgressNodes.Contains(nodeName))
+            {
+                reason = SavePointRejectReason.DetourResume;
+                return false;
+            }
+
+            if (!string.IsNullOrEmpty(nodeName))
+            {
+                InProgressNodes.Add(nodeName);
+            }
+
+            return EvaluateTagsForAutoSave(nodeName, tags, out reason);
+        }
+
+        /// <summary>仅 tag / no_save 判定，不含 InProgress detour 门控（供编辑器模拟）。</summary>
+        public static bool EvaluateNodeTagsForAutoSave(
+            string nodeName,
+            IReadOnlyList<string> tags,
+            out SavePointRejectReason reason)
+        {
+            return EvaluateTagsForAutoSave(nodeName, tags, out reason);
+        }
+
+        /// <summary>节点执行完毕，移出 InProgress。</summary>
+        public static void OnNodeComplete(string projectId, string nodeName)
+        {
+            if (string.IsNullOrEmpty(nodeName))
+            {
+                return;
+            }
+
+            EnsureProjectScope(projectId);
+            InProgressNodes.Remove(nodeName);
+        }
+
         /// <summary>
         /// 当前是否可以执行 Yarn 显式 <c>&lt;&lt;save&gt;&gt;</c> 命令。
         /// 仅检查全局门控，不检查节点 tag / no_save。
@@ -77,7 +171,7 @@ namespace AibisDream.SaveSystem
         }
 
         /// <summary>
-        /// 当前是否可以自动存档。
+        /// 当前是否可以自动存档（不含 detour resume 判定；供 TryAutoSave 等无节点上下文路径）。
         /// </summary>
         public static bool CanAutoSave(out SavePointRejectReason reason)
         {
@@ -90,57 +184,7 @@ namespace AibisDream.SaveSystem
                 ? DialogController.Instance.GetCurrentNodeContext()
                 : (null, null);
 
-            // no_save 标记覆盖一切：即使节点类型默认可存，也不允许保存。
-            if (tags != null && IsTagPresent(tags, "no_save"))
-            {
-                reason = SavePointRejectReason.MarkedNoSave;
-                return false;
-            }
-
-            // 无活跃节点，或节点未声明任何 tag：允许保存。
-            // 注：FixSystemNew 等交互状态可能没有活跃 Yarn 节点，仍需保存当前状态。
-            if (string.IsNullOrEmpty(nodeName) || tags == null || tags.Count == 0)
-            {
-                if (!string.IsNullOrEmpty(nodeName) && (tags == null || tags.Count == 0))
-                {
-                    Debug.LogWarning(
-                        $"[SavePointEvaluator] 节点 {nodeName} 未声明任何 tag，默认允许自动存档。请补全节点类型标签。");
-                }
-
-                reason = SavePointRejectReason.None;
-                return true;
-            }
-
-            // 按主 tag 判定。
-            var primaryTag = FindPrimaryTag(tags);
-
-            // 未识别到已知主 tag：放行但警告，方便脚本作者补标。
-            if (primaryTag == null)
-            {
-                Debug.LogWarning(
-                    $"[SavePointEvaluator] 节点 {nodeName} 的 tags [{string.Join(", ", tags)}] 未声明保存语义，默认允许自动存档。");
-                reason = SavePointRejectReason.None;
-                return true;
-            }
-
-            if (AutoSaveDeniedTags.Contains(primaryTag))
-            {
-                reason = SavePointRejectReason.DeniedByTag;
-                return false;
-            }
-
-            if (AutoSaveAllowedTags.Contains(primaryTag))
-            {
-                reason = SavePointRejectReason.None;
-                return true;
-            }
-
-            // 理论上不会到达：已识别主 tag 但既不在允许集合也不在禁止集合。
-            // 保持放行并警告，避免未来新增 tag 时意外阻断存档。
-            Debug.LogWarning(
-                $"[SavePointEvaluator] 节点 {nodeName} 的 tag '{primaryTag}' 未声明保存语义，默认允许自动存档。");
-            reason = SavePointRejectReason.None;
-            return true;
+            return EvaluateTagsForAutoSave(nodeName, tags, out reason);
         }
 
         /// <summary>
@@ -164,6 +208,14 @@ namespace AibisDream.SaveSystem
             return true;
         }
 
+        private static void EnsureProjectScope(string projectId)
+        {
+            if (!string.Equals(_activeProjectId, projectId, StringComparison.Ordinal))
+            {
+                ResetForProject(projectId);
+            }
+        }
+
         private static bool TryPassGlobalSaveGuards(out SavePointRejectReason reason)
         {
             if (SaveRestoreOrchestrator.IsAutoSaveSuppressed)
@@ -188,6 +240,57 @@ namespace AibisDream.SaveSystem
             return true;
         }
 
+        private static bool EvaluateTagsForAutoSave(
+            string nodeName,
+            IReadOnlyList<string> tags,
+            out SavePointRejectReason reason)
+        {
+            if (tags != null && IsTagPresent(tags, "no_save"))
+            {
+                reason = SavePointRejectReason.MarkedNoSave;
+                return false;
+            }
+
+            if (string.IsNullOrEmpty(nodeName) || tags == null || tags.Count == 0)
+            {
+                if (!string.IsNullOrEmpty(nodeName) && (tags == null || tags.Count == 0))
+                {
+                    Debug.LogWarning(
+                        $"[SavePointEvaluator] 节点 {nodeName} 未声明任何 tag，默认允许自动存档。请补全节点类型标签。");
+                }
+
+                reason = SavePointRejectReason.None;
+                return true;
+            }
+
+            var primaryTag = FindPrimaryTag(tags);
+
+            if (primaryTag == null)
+            {
+                Debug.LogWarning(
+                    $"[SavePointEvaluator] 节点 {nodeName} 的 tags [{string.Join(", ", tags)}] 未声明保存语义，默认允许自动存档。");
+                reason = SavePointRejectReason.None;
+                return true;
+            }
+
+            if (AutoSaveDeniedTags.Contains(primaryTag))
+            {
+                reason = SavePointRejectReason.DeniedByTag;
+                return false;
+            }
+
+            if (AutoSaveAllowedTags.Contains(primaryTag))
+            {
+                reason = SavePointRejectReason.None;
+                return true;
+            }
+
+            Debug.LogWarning(
+                $"[SavePointEvaluator] 节点 {nodeName} 的 tag '{primaryTag}' 未声明保存语义，默认允许自动存档。");
+            reason = SavePointRejectReason.None;
+            return true;
+        }
+
         private static bool IsTagPresent(IReadOnlyList<string> tags, string tag)
         {
             if (tags == null) return false;
@@ -203,9 +306,6 @@ namespace AibisDream.SaveSystem
             return false;
         }
 
-        /// <summary>
-        /// 从 tags 中找到第一个已知的保存语义主 tag；若均未知则返回 null。
-        /// </summary>
         private static string FindPrimaryTag(IReadOnlyList<string> tags)
         {
             foreach (var tag in tags)