diff --git a/docs/en/guide/schema.md b/docs/en/guide/schema.md
index 0c5947e..3c8169b 100644
--- a/docs/en/guide/schema.md
+++ b/docs/en/guide/schema.md
@@ -22,6 +22,7 @@ interface IElement {
   };
   value: string;
   valueList?: IElement[]; // Use of composite elements (hyperlinks, titles, lists, and so on).
+  extension?: unknown;
   // style
   font?: string;
   size?: number;
diff --git a/docs/guide/schema.md b/docs/guide/schema.md
index c173cf6..e8f4eb2 100644
--- a/docs/guide/schema.md
+++ b/docs/guide/schema.md
@@ -22,6 +22,7 @@ interface IElement {
   };
   value: string;
   valueList?: IElement[]; // 复合元素（超链接、标题、列表等）使用
+  extension?: unknown;
   // 样式
   font?: string;
   size?: number;
diff --git a/src/editor/core/range/RangeManager.ts b/src/editor/core/range/RangeManager.ts
index e141bee..af9a2a5 100644
--- a/src/editor/core/range/RangeManager.ts
+++ b/src/editor/core/range/RangeManager.ts
@@ -429,6 +429,8 @@ export class RangeManager {
     const redo = this.historyManager.isCanRedo()
     // 组信息
     const groupIds = curElement.groupIds || null
+    // 扩展字段
+    const extension = curElement.extension ?? null
     const rangeStyle: IRangeStyle = {
       type,
       undo,
@@ -449,7 +451,8 @@ export class RangeManager {
       listType,
       listStyle,
       groupIds,
-      textDecoration
+      textDecoration,
+      extension
     }
     if (rangeStyleChangeListener) {
       rangeStyleChangeListener(rangeStyle)
@@ -490,7 +493,8 @@ export class RangeManager {
       listType: null,
       listStyle: null,
       groupIds: null,
-      textDecoration: null
+      textDecoration: null,
+      extension: null
     }
     if (rangeStyleChangeListener) {
       rangeStyleChangeListener(rangeStyle)
diff --git a/src/editor/dataset/constant/Element.ts b/src/editor/dataset/constant/Element.ts
index fb541e6..fbfa8f2 100644
--- a/src/editor/dataset/constant/Element.ts
+++ b/src/editor/dataset/constant/Element.ts
@@ -70,7 +70,8 @@ export const EDITOR_ELEMENT_ZIP_ATTR: Array<keyof IElement> = [
   'conceptId',
   'imgDisplay',
   'imgFloatPosition',
-  'textDecoration'
+  'textDecoration',
+  'extension'
 ]
 
 export const TABLE_TD_ZIP_ATTR: Array<keyof ITd> = [
diff --git a/src/editor/interface/Element.ts b/src/editor/interface/Element.ts
index 0da75f8..47cbf5b 100644
--- a/src/editor/interface/Element.ts
+++ b/src/editor/interface/Element.ts
@@ -16,6 +16,7 @@ export interface IElementBasic {
   id?: string
   type?: ElementType
   value: string
+  extension?: unknown
 }
 
 export interface IElementStyle {
diff --git a/src/editor/interface/Listener.ts b/src/editor/interface/Listener.ts
index 55aec0a..feb4649 100644
--- a/src/editor/interface/Listener.ts
+++ b/src/editor/interface/Listener.ts
@@ -32,6 +32,7 @@ export interface IRangeStyle {
   listStyle: ListStyle | null
   groupIds: string[] | null
   textDecoration: ITextDecoration | null
+  extension?: unknown | null
 }
 
 export type IRangeStyleChange = (payload: IRangeStyle) => void