diff --git a/Assets/Scripts/UI/Components/DreamTerminalUI.cs b/Assets/Scripts/UI/Components/DreamTerminalUI.cs
index f80b2e7fb..1e2fb04c5 100644
--- a/Assets/Scripts/UI/Components/DreamTerminalUI.cs
+++ b/Assets/Scripts/UI/Components/DreamTerminalUI.cs
@@ -130,7 +130,6 @@ namespace AibisDream.UI
         private string _inputBuffer = "";
         private bool   _cursorVisible = true;
         private Coroutine _crashSpamCoroutine;
-        private double _editorLastRepaintTime;
 
         // 全局 alpha（用于 DreamDoorSystem 淡入淡出）
         public float Alpha { get; set; } = 0f;
@@ -154,12 +153,6 @@ namespace AibisDream.UI
 
         private void Update()
         {
-            if (!Application.isPlaying)
-            {
-                UpdateEditorPreview();
-                return;
-            }
-
             if (_phase == TerminalPhase.WaitingInput)
                 HandleTypingInput();
             else if (_phase == TerminalPhase.Confirming)
@@ -178,17 +171,16 @@ namespace AibisDream.UI
             base.OnEnable();
             EnsureDefaultFontReference();
 
+#if UNITY_EDITOR
             if (!Application.isPlaying)
-                ApplyEditorPreviewState();
+                EditorRunPreviewTick();
+#endif
         }
 
         private void OnValidate()
         {
             EnsureDefaultFontReference();
             MorphProgress = morphProgress;
-
-            if (!Application.isPlaying)
-                ApplyEditorPreviewState();
         }
 
         #endregion
@@ -231,33 +223,6 @@ namespace AibisDream.UI
             return Vector2.Lerp(morphStartSize, terminalSize, frameProgress);
         }
 
-        [ContextMenu("Preview/Frame Only")]
-        private void PreviewFrameOnly()
-        {
-            previewInEditor = true;
-            previewStage = PreviewStage.FrameOnly;
-            previewAlpha = 1f;
-            previewMorphProgress = 0.65f;
-            ApplyEditorPreviewState();
-        }
-
-        [ContextMenu("Preview/Waiting Input")]
-        private void PreviewWaitingInput()
-        {
-            previewInEditor = true;
-            previewStage = PreviewStage.WaitingInput;
-            previewAlpha = 1f;
-            previewMorphProgress = 1f;
-            ApplyEditorPreviewState();
-        }
-
-        [ContextMenu("Preview/Clear")]
-        private void ClearPreview()
-        {
-            previewInEditor = false;
-            ApplyEditorPreviewState();
-        }
-
         #endregion
 
         #region Shapes 绘制（DrawShapes 覆写）
@@ -876,7 +841,7 @@ namespace AibisDream.UI
             public float    delayAfter;
         }
 
-        private enum PreviewStage
+        public enum PreviewStage
         {
             Hidden,
             FrameOnly,
@@ -898,7 +863,10 @@ namespace AibisDream.UI
         #endregion
 
 #if UNITY_EDITOR
-        private void UpdateEditorPreview()
+        private double _editorLastRepaintTime;
+
+        /// <summary>仅编辑器：由 DreamTerminalUIEditor（CustomEditor）在需要时调用。</summary>
+        public void EditorRunPreviewTick()
         {
             ApplyEditorPreviewState();
 
diff --git a/Assets/Scripts/UI/Editor.meta b/Assets/Scripts/UI/Editor.meta
new file mode 100644
index 000000000..50677ed63
--- /dev/null
+++ b/Assets/Scripts/UI/Editor.meta
@@ -0,0 +1,8 @@
+fileFormatVersion: 2
+guid: 476765c2f1febfa46abc793693aafa81
+folderAsset: yes
+DefaultImporter:
+  externalObjects: {}
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: 
diff --git a/Assets/Scripts/UI/Editor/DreamTerminalUIEditor.cs b/Assets/Scripts/UI/Editor/DreamTerminalUIEditor.cs
new file mode 100644
index 000000000..0c99f758b
--- /dev/null
+++ b/Assets/Scripts/UI/Editor/DreamTerminalUIEditor.cs
@@ -0,0 +1,107 @@
+using AibisDream.UI;
+using UnityEditor;
+using UnityEngine;
+
+namespace AibisDream.UI.Editor
+{
+    [CustomEditor(typeof(DreamTerminalUI))]
+    [CanEditMultipleObjects]
+    internal sealed class DreamTerminalUIEditor : UnityEditor.Editor
+    {
+        void OnEnable()
+        {
+            EditorApplication.update += OnEditorUpdate;
+            RefreshAllTargets();
+        }
+
+        void OnDisable()
+        {
+            EditorApplication.update -= OnEditorUpdate;
+        }
+
+        void OnEditorUpdate()
+        {
+            if (Application.isPlaying)
+                return;
+
+            RefreshAllTargets();
+        }
+
+        public override void OnInspectorGUI()
+        {
+            serializedObject.Update();
+
+            EditorGUI.BeginChangeCheck();
+            DrawDefaultInspector();
+            bool changed = EditorGUI.EndChangeCheck();
+
+            serializedObject.ApplyModifiedProperties();
+
+            if (changed)
+                RefreshAllTargets();
+
+            EditorGUILayout.Space();
+            using (new EditorGUILayout.HorizontalScope())
+            {
+                if (GUILayout.Button("Preview / Frame Only"))
+                    ApplyPreset(PreviewPreset.FrameOnly);
+
+                if (GUILayout.Button("Preview / Waiting Input"))
+                    ApplyPreset(PreviewPreset.WaitingInput);
+            }
+
+            if (GUILayout.Button("Preview / Clear"))
+                ApplyPreset(PreviewPreset.Clear);
+        }
+
+        enum PreviewPreset
+        {
+            FrameOnly,
+            WaitingInput,
+            Clear
+        }
+
+        void ApplyPreset(PreviewPreset preset)
+        {
+            Undo.RecordObjects(targets, "Dream Terminal Preview Preset");
+
+            foreach (Object o in targets)
+            {
+                var ui = (DreamTerminalUI)o;
+                SerializedObject so = new SerializedObject(ui);
+
+                switch (preset)
+                {
+                    case PreviewPreset.FrameOnly:
+                        so.FindProperty("previewInEditor").boolValue = true;
+                        so.FindProperty("previewStage").enumValueIndex = (int)DreamTerminalUI.PreviewStage.FrameOnly;
+                        so.FindProperty("previewAlpha").floatValue = 1f;
+                        so.FindProperty("previewMorphProgress").floatValue = 0.65f;
+                        break;
+                    case PreviewPreset.WaitingInput:
+                        so.FindProperty("previewInEditor").boolValue = true;
+                        so.FindProperty("previewStage").enumValueIndex = (int)DreamTerminalUI.PreviewStage.WaitingInput;
+                        so.FindProperty("previewAlpha").floatValue = 1f;
+                        so.FindProperty("previewMorphProgress").floatValue = 1f;
+                        break;
+                    case PreviewPreset.Clear:
+                        so.FindProperty("previewInEditor").boolValue = false;
+                        break;
+                }
+
+                so.ApplyModifiedProperties();
+                ui.EditorRunPreviewTick();
+            }
+        }
+
+        void RefreshAllTargets()
+        {
+            foreach (Object o in targets)
+            {
+                var ui = o as DreamTerminalUI;
+                if (ui != null)
+                    ui.EditorRunPreviewTick();
+            }
+        }
+    }
+}
diff --git a/Assets/Scripts/UI/Editor/DreamTerminalUIEditor.cs.meta b/Assets/Scripts/UI/Editor/DreamTerminalUIEditor.cs.meta
new file mode 100644
index 000000000..4770c8ea5
--- /dev/null
+++ b/Assets/Scripts/UI/Editor/DreamTerminalUIEditor.cs.meta
@@ -0,0 +1,11 @@
+fileFormatVersion: 2
+guid: 747d2c6e1751ca44ca1dc64512027f8c
+MonoImporter:
+  externalObjects: {}
+  serializedVersion: 2
+  defaultReferences: []
+  executionOrder: 0
+  icon: {instanceID: 0}
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: