diff --git a/packages/client/package.json b/packages/client/package.json
index 83e9cf6c..a7d43d8f 100644
--- a/packages/client/package.json
+++ b/packages/client/package.json
@@ -39,6 +39,8 @@
     "@tiptap/extension-paragraph": "^2.0.0-beta.23",
     "@tiptap/extension-placeholder": "^2.0.0-beta.47",
     "@tiptap/extension-strike": "^2.0.0-beta.27",
+    "@tiptap/extension-subscript": "^2.0.0-beta.10",
+    "@tiptap/extension-superscript": "^2.0.0-beta.10",
     "@tiptap/extension-table": "^2.0.0-beta.48",
     "@tiptap/extension-table-cell": "^2.0.0-beta.20",
     "@tiptap/extension-table-header": "^2.0.0-beta.22",
diff --git a/packages/client/src/components/icons/IconSub.tsx b/packages/client/src/components/icons/IconSub.tsx
new file mode 100644
index 00000000..6eb2a3ef
--- /dev/null
+++ b/packages/client/src/components/icons/IconSub.tsx
@@ -0,0 +1,22 @@
+import { Icon } from '@douyinfe/semi-ui';
+
+export const IconSub: React.FC<{ style?: React.CSSProperties }> = ({ style = {} }) => {
+  return (
+    <Icon
+      style={style}
+      svg={
+        <svg width="16" height="16" viewBox="0 0 256 256" role="presentation">
+          <g stroke="currentColor" fill="none" fill-rule="evenodd">
+            <path stroke-width="20" stroke-linecap="round" d="m40 50 114 168M154 50 40 218"></path>
+            <path
+              d="M231.92 225.48c2.72 0 4.08-1.48 4.08-4.44 0-2.88-1.36-4.32-4.08-4.32H198.8c6.48-5.52 12.28-11.24 17.4-17.16 2.16-2.48 4.28-5.16 6.36-8.04 2.08-2.88 3.94-5.82 5.58-8.82 1.64-3 2.96-6.04 3.96-9.12 1-3.08 1.5-6.14 1.5-9.18 0-3.36-.48-6.42-1.44-9.18s-2.38-5.12-4.26-7.08-4.2-3.48-6.96-4.56c-2.76-1.08-5.9-1.62-9.42-1.62-7.92 0-13.8 2.26-17.64 6.78-3.84 4.52-5.76 10.66-5.76 18.42 0 2.24.32 3.74.96 4.5.64.76 1.96 1.14 3.96 1.14 1.76 0 2.98-.44 3.66-1.32.68-.88 1.02-2.32 1.02-4.32 0-4.8 1.04-8.74 3.12-11.82s5.4-4.62 9.96-4.62c4 0 7.16 1.32 9.48 3.96 2.32 2.64 3.48 6.12 3.48 10.44 0 3.2-.64 6.42-1.92 9.66-1.28 3.24-2.94 6.4-4.98 9.48a84.099 84.099 0 0 1-6.84 8.94c-2.52 2.88-5.04 5.6-7.56 8.16-2.52 2.56-4.92 4.94-7.2 7.14-2.28 2.2-4.18 4.1-5.7 5.7-.64 1.04-.96 2.04-.96 3-.56 1.04-.86 2.06-.9 3.06-.04 1 .1 1.88.42 2.64.32.76.8 1.38 1.44 1.86.64.48 1.36.72 2.16.72h40.2Z"
+              strokeWidth="5"
+              fill="currentColor"
+              fillRule="nonzero"
+            ></path>
+          </g>
+        </svg>
+      }
+    />
+  );
+};
diff --git a/packages/client/src/components/icons/IconSup.tsx b/packages/client/src/components/icons/IconSup.tsx
new file mode 100644
index 00000000..f2e7b0d1
--- /dev/null
+++ b/packages/client/src/components/icons/IconSup.tsx
@@ -0,0 +1,22 @@
+import { Icon } from '@douyinfe/semi-ui';
+
+export const IconSup: React.FC<{ style?: React.CSSProperties }> = ({ style = {} }) => {
+  return (
+    <Icon
+      style={style}
+      svg={
+        <svg width="16" height="16" viewBox="0 0 256 256" role="presentation">
+          <g stroke="currentColor" fill="none" fill-rule="evenodd">
+            <path stroke-width="20" stroke-linecap="round" d="m40 50 114 168M154 50 40 218"></path>
+            <path
+              d="M231.92 103.48c2.72 0 4.08-1.48 4.08-4.44 0-2.88-1.36-4.32-4.08-4.32H198.8c6.48-5.52 12.28-11.24 17.4-17.16 2.16-2.48 4.28-5.16 6.36-8.04 2.08-2.88 3.94-5.82 5.58-8.82 1.64-3 2.96-6.04 3.96-9.12 1-3.08 1.5-6.14 1.5-9.18 0-3.36-.48-6.42-1.44-9.18s-2.38-5.12-4.26-7.08-4.2-3.48-6.96-4.56c-2.76-1.08-5.9-1.62-9.42-1.62-7.92 0-13.8 2.26-17.64 6.78-3.84 4.52-5.76 10.66-5.76 18.42 0 2.24.32 3.74.96 4.5.64.76 1.96 1.14 3.96 1.14 1.76 0 2.98-.44 3.66-1.32.68-.88 1.02-2.32 1.02-4.32 0-4.8 1.04-8.74 3.12-11.82s5.4-4.62 9.96-4.62c4 0 7.16 1.32 9.48 3.96 2.32 2.64 3.48 6.12 3.48 10.44 0 3.2-.64 6.42-1.92 9.66-1.28 3.24-2.94 6.4-4.98 9.48a84.099 84.099 0 0 1-6.84 8.94c-2.52 2.88-5.04 5.6-7.56 8.16-2.52 2.56-4.92 4.94-7.2 7.14-2.28 2.2-4.18 4.1-5.7 5.7-.64 1.04-.96 2.04-.96 3-.56 1.04-.86 2.06-.9 3.06-.04 1 .1 1.88.42 2.64.32.76.8 1.38 1.44 1.86.64.48 1.36.72 2.16.72h40.2Z"
+              strokeWidth="5"
+              fill="currentColor"
+              fillRule="nonzero"
+            ></path>
+          </g>
+        </svg>
+      }
+    />
+  );
+};
diff --git a/packages/client/src/components/icons/index.tsx b/packages/client/src/components/icons/index.tsx
index fb4feb8f..2a157225 100644
--- a/packages/client/src/components/icons/index.tsx
+++ b/packages/client/src/components/icons/index.tsx
@@ -45,3 +45,5 @@ export * from './IconHeading3';
 export * from './IconTableHeaderRow';
 export * from './IconTableHeaderColumn';
 export * from './IconTableHeaderCell';
+export * from './IconSub';
+export * from './IconSup';
diff --git a/packages/client/src/components/tiptap/basekit.tsx b/packages/client/src/components/tiptap/basekit.tsx
index e4fd19e2..f038dce9 100644
--- a/packages/client/src/components/tiptap/basekit.tsx
+++ b/packages/client/src/components/tiptap/basekit.tsx
@@ -36,6 +36,8 @@ import { SearchNReplace } from './extensions/search';
 import { SelectionExtension } from './extensions/selection';
 import { Status } from './extensions/status';
 import { Strike } from './extensions/strike';
+import { Subscript } from './extensions/subscript';
+import { Superscript } from './extensions/superscript';
 import { Table } from './extensions/table';
 import { TableCell } from './extensions/tableCell';
 import { TableHeader } from './extensions/tableHeader';
@@ -89,6 +91,8 @@ export const BaseKit = [
   SelectionExtension,
   Status,
   Strike,
+  Subscript,
+  Superscript,
   Table,
   TableCell,
   TableHeader,
diff --git a/packages/client/src/components/tiptap/extensions/subscript.ts b/packages/client/src/components/tiptap/extensions/subscript.ts
new file mode 100644
index 00000000..18c9f724
--- /dev/null
+++ b/packages/client/src/components/tiptap/extensions/subscript.ts
@@ -0,0 +1,3 @@
+import Subscript from '@tiptap/extension-subscript';
+
+export { Subscript };
diff --git a/packages/client/src/components/tiptap/extensions/superscript.ts b/packages/client/src/components/tiptap/extensions/superscript.ts
new file mode 100644
index 00000000..2d1ce12e
--- /dev/null
+++ b/packages/client/src/components/tiptap/extensions/superscript.ts
@@ -0,0 +1,3 @@
+import Superscript from '@tiptap/extension-superscript';
+
+export { Superscript };
diff --git a/packages/client/src/components/tiptap/menus/baseMenu.tsx b/packages/client/src/components/tiptap/menus/baseMenu.tsx
index 082b5122..fc9f59f0 100644
--- a/packages/client/src/components/tiptap/menus/baseMenu.tsx
+++ b/packages/client/src/components/tiptap/menus/baseMenu.tsx
@@ -1,6 +1,7 @@
 import React from 'react';
 import { Button } from '@douyinfe/semi-ui';
 import { IconBold, IconItalic, IconStrikeThrough, IconUnderline, IconCode } from '@douyinfe/semi-icons';
+import { IconSup, IconSub } from 'components/icons';
 import { Tooltip } from 'components/tooltip';
 import { isTitleActive } from '../services/isActive';
 import { ColorMenu } from './color';
@@ -62,6 +63,26 @@ export const BaseMenu: React.FC<{ editor: any }> = ({ editor }) => {
         />
       </Tooltip>
 
+      <Tooltip content="上标">
+        <Button
+          theme={editor.isActive('superscript') ? 'light' : 'borderless'}
+          type="tertiary"
+          icon={<IconSup />}
+          onClick={() => editor.chain().focus().toggleSuperscript().run()}
+          disabled={isTitleActive(editor)}
+        />
+      </Tooltip>
+
+      <Tooltip content="下标">
+        <Button
+          theme={editor.isActive('subscript') ? 'light' : 'borderless'}
+          type="tertiary"
+          icon={<IconSub />}
+          onClick={() => editor.chain().focus().toggleSubscript().run()}
+          disabled={isTitleActive(editor)}
+        />
+      </Tooltip>
+
       <ColorMenu editor={editor} />
     </>
   );
diff --git a/packages/client/src/components/tiptap/services/markdown/htmlToProsemirror/marks/subscript.ts b/packages/client/src/components/tiptap/services/markdown/htmlToProsemirror/marks/subscript.ts
new file mode 100644
index 00000000..df27821d
--- /dev/null
+++ b/packages/client/src/components/tiptap/services/markdown/htmlToProsemirror/marks/subscript.ts
@@ -0,0 +1,13 @@
+import { Mark } from './mark';
+
+export class Subscript extends Mark {
+  matching() {
+    return this.DOMNode.nodeName === 'SUB';
+  }
+
+  data() {
+    return {
+      type: 'subscript',
+    };
+  }
+}
diff --git a/packages/client/src/components/tiptap/services/markdown/htmlToProsemirror/marks/superscript.ts b/packages/client/src/components/tiptap/services/markdown/htmlToProsemirror/marks/superscript.ts
new file mode 100644
index 00000000..500928c4
--- /dev/null
+++ b/packages/client/src/components/tiptap/services/markdown/htmlToProsemirror/marks/superscript.ts
@@ -0,0 +1,13 @@
+import { Mark } from './mark';
+
+export class Superscript extends Mark {
+  matching() {
+    return this.DOMNode.nodeName === 'SUP';
+  }
+
+  data() {
+    return {
+      type: 'superscript',
+    };
+  }
+}
diff --git a/packages/client/src/components/tiptap/services/markdown/htmlToProsemirror/renderer.ts b/packages/client/src/components/tiptap/services/markdown/htmlToProsemirror/renderer.ts
index e21ddda7..5f33c119 100644
--- a/packages/client/src/components/tiptap/services/markdown/htmlToProsemirror/renderer.ts
+++ b/packages/client/src/components/tiptap/services/markdown/htmlToProsemirror/renderer.ts
@@ -36,6 +36,8 @@ import { Bold } from './marks/bold';
 import { Code } from './marks/code';
 import { Italic } from './marks/italic';
 import { Link } from './marks/link';
+import { Subscript } from './marks/subscript';
+import { Superscript } from './marks/superscript';
 import { Underline } from './marks/underline';
 
 export class Renderer {
@@ -84,7 +86,7 @@ export class Renderer {
       BulletList,
     ];
 
-    this.marks = [Bold, Code, Italic, Link, Underline];
+    this.marks = [Bold, Code, Italic, Link, Subscript, Superscript, Underline];
   }
 
   setDocument(document) {
diff --git a/packages/client/src/components/tiptap/services/markdown/prosemirrorToMarkdown/index.ts b/packages/client/src/components/tiptap/services/markdown/prosemirrorToMarkdown/index.ts
index 04a76722..9b1ce7ad 100644
--- a/packages/client/src/components/tiptap/services/markdown/prosemirrorToMarkdown/index.ts
+++ b/packages/client/src/components/tiptap/services/markdown/prosemirrorToMarkdown/index.ts
@@ -22,6 +22,8 @@ import { OrderedList } from '../../../extensions/orderedList';
 import { Paragraph } from '../../../extensions/paragraph';
 import { Status } from '../../../extensions/status';
 import { Strike } from '../../../extensions/strike';
+import { Subscript } from '../../../extensions/subscript';
+import { Superscript } from '../../../extensions/superscript';
 import { Table } from '../../../extensions/table';
 import { TableCell } from '../../../extensions/tableCell';
 import { TableHeader } from '../../../extensions/tableHeader';
@@ -67,6 +69,8 @@ const SerializerConfig = {
       mixable: true,
       expelEnclosingWhitespace: true,
     },
+    [Subscript.name]: { open: '<sub>', close: '</sub>', mixable: true },
+    [Superscript.name]: { open: '<sup>', close: '</sup>', mixable: true },
     // FIXME: 如何导出 style？
     [TextStyle.name]: { open: '', close: '', mixable: true, expelEnclosingWhitespace: true },
     ...marks.reduce(
diff --git a/pnpm-lock.yaml b/pnpm-lock.yaml
index b5f8558d..e63fe000 100644
--- a/pnpm-lock.yaml
+++ b/pnpm-lock.yaml
@@ -73,6 +73,8 @@ importers:
       '@tiptap/extension-paragraph': ^2.0.0-beta.23
       '@tiptap/extension-placeholder': ^2.0.0-beta.47
       '@tiptap/extension-strike': ^2.0.0-beta.27
+      '@tiptap/extension-subscript': ^2.0.0-beta.10
+      '@tiptap/extension-superscript': ^2.0.0-beta.10
       '@tiptap/extension-table': ^2.0.0-beta.48
       '@tiptap/extension-table-cell': ^2.0.0-beta.20
       '@tiptap/extension-table-header': ^2.0.0-beta.22
@@ -150,6 +152,8 @@ importers:
       '@tiptap/extension-paragraph': 2.0.0-beta.23_@tiptap+core@2.0.0-beta.171
       '@tiptap/extension-placeholder': 2.0.0-beta.47_@tiptap+core@2.0.0-beta.171
       '@tiptap/extension-strike': 2.0.0-beta.27_@tiptap+core@2.0.0-beta.171
+      '@tiptap/extension-subscript': 2.0.0-beta.10_@tiptap+core@2.0.0-beta.171
+      '@tiptap/extension-superscript': 2.0.0-beta.10_@tiptap+core@2.0.0-beta.171
       '@tiptap/extension-table': 2.0.0-beta.48_@tiptap+core@2.0.0-beta.171
       '@tiptap/extension-table-cell': 2.0.0-beta.20_@tiptap+core@2.0.0-beta.171
       '@tiptap/extension-table-header': 2.0.0-beta.22_@tiptap+core@2.0.0-beta.171
@@ -1807,6 +1811,22 @@ packages:
       '@tiptap/core': 2.0.0-beta.171
     dev: false
 
+  /@tiptap/extension-subscript/2.0.0-beta.10_@tiptap+core@2.0.0-beta.171:
+    resolution: {integrity: sha512-er8/1lp0Rb+SKwEioW0w4oVf3EkdQZ0WS/5kPBG4W0DncfUMT+bw5de76S3kRL9PLZ9UShAL7wuXtuiSi5QsMw==}
+    peerDependencies:
+      '@tiptap/core': ^2.0.0-beta.1
+    dependencies:
+      '@tiptap/core': 2.0.0-beta.171
+    dev: false
+
+  /@tiptap/extension-superscript/2.0.0-beta.10_@tiptap+core@2.0.0-beta.171:
+    resolution: {integrity: sha512-TUUBS8XsD2MorGORYVlhGDH7wcc9diSbHscD4Dnz8pKWVR0JPUd/od4h5qSffDzAOKxtphTiX9LOFWk6zVooKg==}
+    peerDependencies:
+      '@tiptap/core': ^2.0.0-beta.1
+    dependencies:
+      '@tiptap/core': 2.0.0-beta.171
+    dev: false
+
   /@tiptap/extension-table-cell/2.0.0-beta.20_@tiptap+core@2.0.0-beta.171:
     resolution: {integrity: sha512-IllQyxLQvgm1FAewz3U+DkgNHRthmuVrtUQnG6la45qdUOLCOrpFbRRaQ1LJ/BpbvZ2Xs1o2yAa97BqZOPwovQ==}
     peerDependencies: