diff --git a/src/server/trpc/routers/workspace.ts b/src/server/trpc/routers/workspace.ts
index fa07946..a1587b8 100644
--- a/src/server/trpc/routers/workspace.ts
+++ b/src/server/trpc/routers/workspace.ts
@@ -17,7 +17,11 @@ import { OPENAPI_TAG } from '../../utils/const.js';
 import { OpenApiMeta } from 'trpc-openapi';
 import { getServerCount } from '../../model/serverStatus.js';
 import { ROLES, slugRegex } from '@tianji/shared';
-import { createUserSelect, joinWorkspace } from '../../model/user.js';
+import {
+  createUserSelect,
+  joinWorkspace,
+  leaveWorkspace,
+} from '../../model/user.js';
 import { WorkspacesOnUsersModelSchema } from '../../prisma/zod/workspacesonusers.js';
 
 export const workspaceRouter = router({
@@ -222,6 +226,25 @@ export const workspaceRouter = router({
         throw new Error('Target user not existed');
       }
     }),
+  tick: workspaceOwnerProcedure
+    .meta(
+      buildWorkspaceOpenapi({
+        method: 'DELETE',
+        path: '/{workspaceId}/tick',
+        description: 'Administrator kicks a user out of a workspace.',
+      })
+    )
+    .input(
+      z.object({
+        targetUserId: z.string(),
+      })
+    )
+    .output(z.void())
+    .mutation(async ({ input }) => {
+      const { targetUserId, workspaceId } = input;
+
+      leaveWorkspace(targetUserId, workspaceId);
+    }),
   getUserWorkspaceRole: publicProcedure
     .input(
       z.object({