diff --git a/dashboard/components/content-editor/editor-mode-switch.tsx b/dashboard/components/content-editor/editor-mode-switch.tsx
index b41a533..34b0e00 100644
--- a/dashboard/components/content-editor/editor-mode-switch.tsx
+++ b/dashboard/components/content-editor/editor-mode-switch.tsx
@@ -2,10 +2,14 @@
 
 import { cn } from "@/lib/utils"
 
-import type { ContentMode } from "./types"
+import {
+  CONTENT_MODE_OPTIONS,
+  type ContentMode,
+} from "./types"
 
 type EditorModeSwitchProps = {
   value: ContentMode
+  allowedModes?: ReadonlyArray<ContentMode>
   disabled?: boolean
   onChange: (nextMode: ContentMode) => void
 }
@@ -17,13 +21,20 @@ const MODE_OPTIONS: Array<{ value: ContentMode; label: string }> = [
 
 export function EditorModeSwitch({
   value,
+  allowedModes = CONTENT_MODE_OPTIONS,
   disabled = false,
   onChange,
 }: EditorModeSwitchProps) {
+  const options = MODE_OPTIONS.filter((option) => allowedModes.includes(option.value))
+
+  if (options.length <= 1) {
+    return null
+  }
+
   return (
     <div className="mx-0.5 rounded-[3px] border border-border/80 bg-transparent p-0">
       <div className="flex items-center">
-        {MODE_OPTIONS.map((option) => {
+        {options.map((option) => {
           const active = option.value === value
           return (
             <button
diff --git a/dashboard/components/content-editor/html-editor.tsx b/dashboard/components/content-editor/html-editor.tsx
index ae8fd9c..72742a8 100644
--- a/dashboard/components/content-editor/html-editor.tsx
+++ b/dashboard/components/content-editor/html-editor.tsx
@@ -46,6 +46,7 @@ type HtmlEditorProps = {
   value: string
   onChange: (nextValue: string) => void
   mode: ContentMode
+  allowedModes: ReadonlyArray<ContentMode>
   onModeChange: (nextMode: ContentMode) => void
   fullscreen: boolean
   onToggleFullscreen: () => void
@@ -61,6 +62,7 @@ export const HtmlEditor = forwardRef<HtmlEditorRef, HtmlEditorProps>(
       value,
       onChange,
       mode,
+      allowedModes,
       onModeChange,
       fullscreen,
       onToggleFullscreen,
@@ -180,12 +182,12 @@ export const HtmlEditor = forwardRef<HtmlEditorRef, HtmlEditorProps>(
         content: (
           <EditorModeSwitch
             value={mode}
+            allowedModes={allowedModes}
             disabled={disabled}
             onChange={onModeChange}
           />
         ),
       },
-      { key: "separator-mode", type: "separator" },
       {
         key: "bold",
         label: "粗体",
@@ -327,6 +329,10 @@ export const HtmlEditor = forwardRef<HtmlEditorRef, HtmlEditorProps>(
       },
     ]
 
+    if (allowedModes.length > 1) {
+      actions.splice(1, 0, { key: "separator-mode", type: "separator" })
+    }
+
     if (!editor) {
       return null
     }
diff --git a/dashboard/components/content-editor/index.tsx b/dashboard/components/content-editor/index.tsx
index 9c741aa..1fab56a 100644
--- a/dashboard/components/content-editor/index.tsx
+++ b/dashboard/components/content-editor/index.tsx
@@ -8,7 +8,12 @@ import { cn } from "@/lib/utils"
 import { htmlToMarkdown, markdownToHtml } from "./convert"
 import { HtmlEditor } from "./html-editor"
 import { MarkdownEditor } from "./markdown-editor"
-import type { ContentMode, ContentValue, UploadImageHandler } from "./types"
+import {
+  CONTENT_MODE_OPTIONS,
+  type ContentMode,
+  type ContentValue,
+  type UploadImageHandler,
+} from "./types"
 
 type ContentEditorProps = {
   value: ContentValue
@@ -17,6 +22,7 @@ type ContentEditorProps = {
   disabled?: boolean
   onUploadImage?: UploadImageHandler
   height?: number | string
+  allowedModes?: ReadonlyArray<ContentMode>
 }
 
 function normalizeHeight(height?: number | string) {
@@ -47,10 +53,15 @@ export function ContentEditor({
   disabled = false,
   onUploadImage,
   height,
+  allowedModes = CONTENT_MODE_OPTIONS,
 }: ContentEditorProps) {
   const editorHeight = normalizeHeight(height)
   const [fullscreen, setFullscreen] = useState(false)
   const [mounted, setMounted] = useState(false)
+  const normalizedAllowedModes = allowedModes.length > 0 ? allowedModes : CONTENT_MODE_OPTIONS
+  const activeMode = normalizedAllowedModes.includes(value.mode)
+    ? value.mode
+    : normalizedAllowedModes[0]
 
   useEffect(() => {
     setMounted(true)
@@ -79,7 +90,12 @@ export function ContentEditor({
 
   const handleModeChange = useCallback(
     (nextMode: ContentMode) => {
-      if (disabled || nextMode === value.mode) {
+      if (
+        disabled ||
+        normalizedAllowedModes.length <= 1 ||
+        nextMode === activeMode ||
+        !normalizedAllowedModes.includes(nextMode)
+      ) {
         return
       }
       const currentText = value.raw.trim()
@@ -97,12 +113,18 @@ export function ContentEditor({
 
       onChange({
         mode: nextMode,
-        raw: convertContent(value.mode, value.raw),
+        raw: convertContent(activeMode, value.raw),
       })
     },
-    [disabled, onChange, value.mode, value.raw]
+    [activeMode, disabled, normalizedAllowedModes, onChange, value.raw]
   )
 
+  useEffect(() => {
+    if (value.mode !== activeMode) {
+      onChange({ mode: activeMode, raw: value.raw })
+    }
+  }, [activeMode, onChange, value.mode, value.raw])
+
   const content = (
     <div
       className={cn(
@@ -110,11 +132,12 @@ export function ContentEditor({
         fullscreen && "fixed inset-0 z-[10000] overflow-hidden bg-background p-4"
       )}
     >
-      {value.mode === "markdown" ? (
+      {activeMode === "markdown" ? (
         <MarkdownEditor
           value={value.raw}
           onChange={(nextRaw) => onChange({ mode: "markdown", raw: nextRaw })}
-          mode={value.mode}
+          mode={activeMode}
+          allowedModes={normalizedAllowedModes}
           onModeChange={handleModeChange}
           fullscreen={fullscreen}
           onToggleFullscreen={() => setFullscreen((current) => !current)}
@@ -127,7 +150,8 @@ export function ContentEditor({
         <HtmlEditor
           value={value.raw}
           onChange={(nextRaw) => onChange({ mode: "html", raw: nextRaw })}
-          mode={value.mode}
+          mode={activeMode}
+          allowedModes={normalizedAllowedModes}
           onModeChange={handleModeChange}
           fullscreen={fullscreen}
           onToggleFullscreen={() => setFullscreen((current) => !current)}
diff --git a/dashboard/components/content-editor/markdown-editor.tsx b/dashboard/components/content-editor/markdown-editor.tsx
index e9ad39f..70d3c50 100644
--- a/dashboard/components/content-editor/markdown-editor.tsx
+++ b/dashboard/components/content-editor/markdown-editor.tsx
@@ -24,6 +24,7 @@ type MarkdownEditorProps = {
   value: string
   onChange: (nextValue: string) => void
   mode: ContentMode
+  allowedModes: ReadonlyArray<ContentMode>
   onModeChange: (nextMode: ContentMode) => void
   fullscreen: boolean
   onToggleFullscreen: () => void
@@ -39,6 +40,7 @@ export const MarkdownEditor = forwardRef<MarkdownEditorRef, MarkdownEditorProps>
       value,
       onChange,
       mode,
+      allowedModes,
       onModeChange,
       fullscreen,
       onToggleFullscreen,
@@ -57,6 +59,7 @@ export const MarkdownEditor = forwardRef<MarkdownEditorRef, MarkdownEditorProps>
         <EditorModeSwitch
           key="mode-switch"
           value={mode}
+          allowedModes={allowedModes}
           disabled={disabled}
           onChange={onModeChange}
         />,
@@ -73,7 +76,7 @@ export const MarkdownEditor = forwardRef<MarkdownEditorRef, MarkdownEditorProps>
           )}
         </NormalToolbar>,
       ],
-      [disabled, fullscreen, mode, onModeChange, onToggleFullscreen]
+      [allowedModes, disabled, fullscreen, mode, onModeChange, onToggleFullscreen]
     )
 
     useImperativeHandle(ref, () => ({
diff --git a/dashboard/components/content-editor/types.ts b/dashboard/components/content-editor/types.ts
index 6e1e4ff..f57fac6 100644
--- a/dashboard/components/content-editor/types.ts
+++ b/dashboard/components/content-editor/types.ts
@@ -2,6 +2,8 @@ import type { ComponentType, ReactNode } from "react"
 
 export type ContentMode = "markdown" | "html"
 
+export const CONTENT_MODE_OPTIONS = ["markdown", "html"] as const
+
 export type ContentValue = {
   mode: ContentMode
   raw: string