diff --git a/packages/frontend/core/src/modules/notification/index.ts b/packages/frontend/core/src/modules/notification/index.ts
index 27b6f6d258..a1f5f97e34 100644
--- a/packages/frontend/core/src/modules/notification/index.ts
+++ b/packages/frontend/core/src/modules/notification/index.ts
@@ -1,18 +1,22 @@
 export { NotificationCountService } from './services/count';
 export { NotificationListService } from './services/list';
+export { NotificationService } from './services/notification';
 export type { Notification, NotificationBody } from './stores/notification';
 export { NotificationType } from './stores/notification';
+
 import type { Framework } from '@toeverything/infra';
 
 import { GraphQLService, ServerScope, ServerService } from '../cloud';
 import { GlobalSessionState } from '../storage';
 import { NotificationCountService } from './services/count';
 import { NotificationListService } from './services/list';
+import { NotificationService } from './services/notification';
 import { NotificationStore } from './stores/notification';
 
 export function configureNotificationModule(framework: Framework) {
   framework
     .scope(ServerScope)
+    .service(NotificationService, [NotificationStore])
     .service(NotificationCountService, [NotificationStore])
     .service(NotificationListService, [
       NotificationStore,
diff --git a/packages/frontend/core/src/modules/notification/services/notification.ts b/packages/frontend/core/src/modules/notification/services/notification.ts
new file mode 100644
index 0000000000..691e67eec7
--- /dev/null
+++ b/packages/frontend/core/src/modules/notification/services/notification.ts
@@ -0,0 +1,24 @@
+import type { DocMode } from '@affine/graphql';
+import { Service } from '@toeverything/infra';
+
+import type { NotificationStore } from '../stores/notification';
+
+export class NotificationService extends Service {
+  constructor(private readonly store: NotificationStore) {
+    super();
+  }
+
+  async mentionUser(
+    userId: string,
+    workspaceId: string,
+    doc: {
+      id: string;
+      title: string;
+      blockId?: string;
+      elementId?: string;
+      mode: DocMode;
+    }
+  ): Promise<string> {
+    return this.store.mentionUser(userId, workspaceId, doc);
+  }
+}
diff --git a/packages/frontend/core/src/modules/notification/stores/notification.ts b/packages/frontend/core/src/modules/notification/stores/notification.ts
index b0257808cb..f7f663149f 100644
--- a/packages/frontend/core/src/modules/notification/stores/notification.ts
+++ b/packages/frontend/core/src/modules/notification/stores/notification.ts
@@ -1,6 +1,8 @@
 import {
+  type DocMode,
   type ListNotificationsQuery,
   listNotificationsQuery,
+  mentionUserMutation,
   notificationCountQuery,
   type PaginationInput,
   readNotificationMutation,
@@ -82,4 +84,28 @@ export class NotificationStore extends Store {
       },
     });
   }
+
+  async mentionUser(
+    userId: string,
+    workspaceId: string,
+    doc: {
+      id: string;
+      title: string;
+      blockId?: string;
+      elementId?: string;
+      mode: DocMode;
+    }
+  ) {
+    const result = await this.gqlService.gql({
+      query: mentionUserMutation,
+      variables: {
+        input: {
+          userId,
+          workspaceId,
+          doc,
+        },
+      },
+    });
+    return result.mentionUser;
+  }
 }
diff --git a/packages/frontend/graphql/src/graphql/index.ts b/packages/frontend/graphql/src/graphql/index.ts
index 5878d8abc4..c88eb5106d 100644
--- a/packages/frontend/graphql/src/graphql/index.ts
+++ b/packages/frontend/graphql/src/graphql/index.ts
@@ -1107,6 +1107,14 @@ export const listUsersQuery = {
 }`,
 };
 
+export const mentionUserMutation = {
+  id: 'mentionUserMutation' as const,
+  op: 'mentionUser',
+  query: `mutation mentionUser($input: MentionInput!) {
+  mentionUser(input: $input)
+}`,
+};
+
 export const notificationCountQuery = {
   id: 'notificationCountQuery' as const,
   op: 'notificationCount',
diff --git a/packages/frontend/graphql/src/graphql/mention-user.gql b/packages/frontend/graphql/src/graphql/mention-user.gql
new file mode 100644
index 0000000000..01d1db9e73
--- /dev/null
+++ b/packages/frontend/graphql/src/graphql/mention-user.gql
@@ -0,0 +1,3 @@
+mutation mentionUser($input: MentionInput!) {
+  mentionUser(input: $input)
+} 
\ No newline at end of file
diff --git a/packages/frontend/graphql/src/schema.ts b/packages/frontend/graphql/src/schema.ts
index e2405da888..46e78fea25 100644
--- a/packages/frontend/graphql/src/schema.ts
+++ b/packages/frontend/graphql/src/schema.ts
@@ -3424,6 +3424,15 @@ export type ListUsersQuery = {
   }>;
 };
 
+export type MentionUserMutationVariables = Exact<{
+  input: MentionInput;
+}>;
+
+export type MentionUserMutation = {
+  __typename?: 'Mutation';
+  mentionUser: string;
+};
+
 export type NotificationCountQueryVariables = Exact<{ [key: string]: never }>;
 
 export type NotificationCountQuery = {
@@ -4434,6 +4443,11 @@ export type Mutations =
       variables: LeaveWorkspaceMutationVariables;
       response: LeaveWorkspaceMutation;
     }
+  | {
+      name: 'mentionUserMutation';
+      variables: MentionUserMutationVariables;
+      response: MentionUserMutation;
+    }
   | {
       name: 'publishPageMutation';
       variables: PublishPageMutationVariables;