diff --git a/src/test/java/com/bod/bod/admin/service/AdminServiceTest.java b/src/test/java/com/bod/bod/admin/service/AdminServiceTest.java
new file mode 100644
index 0000000..c581197
--- /dev/null
+++ b/src/test/java/com/bod/bod/admin/service/AdminServiceTest.java
@@ -0,0 +1,110 @@
+package com.bod.bod.admin.service;
+
+import com.bod.bod.admin.dto.AdminUsersResponseDto;
+import com.bod.bod.challenge.repository.ChallengeRepository;
+import com.bod.bod.global.dto.PaginationResponse;
+import com.bod.bod.global.service.S3Service;
+import com.bod.bod.user.entity.User;
+import com.bod.bod.user.entity.UserRole;
+import com.bod.bod.user.entity.UserStatus;
+import com.bod.bod.user.repository.UserRepository;
+import com.bod.bod.verification.repository.VerificationRepository;
+import org.junit.jupiter.api.BeforeEach;
+import org.junit.jupiter.api.DisplayName;
+import org.junit.jupiter.api.Test;
+import org.junit.jupiter.api.extension.ExtendWith;
+import org.mockito.InjectMocks;
+import org.mockito.Mock;
+import org.mockito.junit.jupiter.MockitoExtension;
+import org.springframework.data.domain.PageImpl;
+import org.springframework.data.domain.Pageable;
+import org.springframework.data.redis.core.RedisTemplate;
+
+import java.util.List;
+
+import static org.junit.jupiter.api.Assertions.assertEquals;
+import static org.mockito.ArgumentMatchers.any;
+import static org.mockito.Mockito.when;
+
+@ExtendWith(MockitoExtension.class)
+class AdminServiceTest {
+
+    @Mock
+    UserRepository userRepository;
+
+    @Mock
+    ChallengeRepository challengeRepository;
+
+    @Mock
+    VerificationRepository verificationRepository;
+
+    @Mock
+    S3Service s3Service;
+
+    @Mock
+    RedisTemplate<String, String> redisTemplate;
+
+    @InjectMocks
+    AdminService adminService;
+
+    private User adminUser;
+    private User user1;
+    private User user2;
+
+    @BeforeEach
+    void setUp() {
+        // 각 테스트마다 유저 및 관리자를 초기화
+        adminUser = User.builder()
+                .id(1L)
+                .username("admin")
+                .email("admin@example.com")
+                .password("securePassword")
+                .name("Admin User")
+                .nickname("Admin")
+                .userStatus(UserStatus.ACTIVE)
+                .userRole(UserRole.ADMIN)
+                .build();
+
+        user1 = User.builder()
+                .id(2L)
+                .username("user1")
+                .email("user1@example.com")
+                .password("password1")
+                .name("User One")
+                .nickname("User1")
+                .userStatus(UserStatus.ACTIVE)
+                .userRole(UserRole.USER)
+                .build();
+
+        user2 = User.builder()
+                .id(3L)
+                .username("user2")
+                .email("user2@example.com")
+                .password("password2")
+                .name("User Two")
+                .nickname("User2")
+                .userStatus(UserStatus.ACTIVE)
+                .userRole(UserRole.USER)
+                .build();
+    }
+
+    @Test
+    @DisplayName("전체 유저 조회 - 관리자 권한")
+    void getAllUsers_asAdmin() {
+        // Given
+
+        // Mocking the behavior of userRepository
+        when(userRepository.findAllByOrderByCreatedAtAsc(any(Pageable.class)))
+                .thenReturn(new PageImpl<>(List.of(user1, user2)));
+
+        int page = 0;
+        int size = 10;
+
+        // When
+        PaginationResponse<AdminUsersResponseDto> result = adminService.getAllUsers(page, size, adminUser);
+
+        // Then
+        assertEquals(2, result.getContent().size()); // 유저 수 확인
+        assertEquals(1, result.getTotalPages()); // 전체 페이지 수 확인
+    }
+}