diff --git a/packages/app/src/stores/admin.ts b/packages/app/src/stores/admin.ts
index c12682a..b1adbae 100644
--- a/packages/app/src/stores/admin.ts
+++ b/packages/app/src/stores/admin.ts
@@ -34,6 +34,25 @@ export interface MemberSummary {
   cancelledBookings: number
 }
 
+export interface UserMembership {
+  userId: string
+  membership: {
+    id: string
+    cardTypeId: string
+    remainingTimes: number | null
+    startDate: string
+    expireDate: string
+    status: string
+    cardType: {
+      id: string
+      name: string
+      type: string
+      totalTimes: number | null
+      durationDays: number
+    }
+  } | null
+}
+
 export const useAdminStore = defineStore('admin', () => {
   // ── Week templates ───────────────────────────────────────────────
   const weekTemplates = ref<WeekTemplate[]>([])
@@ -125,6 +144,26 @@ export const useAdminStore = defineStore('admin', () => {
     return get<PaginatedData<MemberSummary>>('/admin/members', cleanParams)
   }
 
+  async function getUserMembership(userId: string): Promise<UserMembership> {
+    return get<UserMembership>(`/admin/members/${userId}/membership`)
+  }
+
+  async function updateUserMembership(
+    userId: string,
+    dto: {
+      cardTypeId: string
+      remainingTimes?: number | null
+      startDate: string
+      expireDate: string
+    },
+  ): Promise<any> {
+    return put<any>(`/admin/members/${userId}/membership`, dto)
+  }
+
+  async function deleteUserMembership(userId: string): Promise<void> {
+    return del<void>(`/admin/members/${userId}/membership`)
+  }
+
   // ── Time slots ───────────────────────────────────────────────────
   async function fetchSlotsByDate(date: string): Promise<TimeSlot[]> {
     return get<TimeSlot[]>('/admin/time-slots', { date })
@@ -191,6 +230,9 @@ export const useAdminStore = defineStore('admin', () => {
     fetchAdminBookings,
     // Members
     fetchMembers,
+    getUserMembership,
+    updateUserMembership,
+    deleteUserMembership,
     // Time slots
     fetchSlotsByDate,
     createManualSlot,