diff --git a/src/main/java/com/kamco/cd/kamcoback/members/AdminApiController.java b/src/main/java/com/kamco/cd/kamcoback/members/AdminApiController.java
index 44f1acb5..bcdebf6d 100644
--- a/src/main/java/com/kamco/cd/kamcoback/members/AdminApiController.java
+++ b/src/main/java/com/kamco/cd/kamcoback/members/AdminApiController.java
@@ -4,6 +4,7 @@ import com.kamco.cd.kamcoback.config.api.ApiResponseDto;
 import com.kamco.cd.kamcoback.members.dto.MembersDto;
 import com.kamco.cd.kamcoback.members.service.AdminService;
 import io.swagger.v3.oas.annotations.Operation;
+import io.swagger.v3.oas.annotations.Parameter;
 import io.swagger.v3.oas.annotations.media.Content;
 import io.swagger.v3.oas.annotations.media.Schema;
 import io.swagger.v3.oas.annotations.responses.ApiResponse;
@@ -12,6 +13,7 @@ import io.swagger.v3.oas.annotations.tags.Tag;
 import jakarta.validation.Valid;
 import java.util.UUID;
 import lombok.RequiredArgsConstructor;
+import org.springframework.web.bind.annotation.GetMapping;
 import org.springframework.web.bind.annotation.PathVariable;
 import org.springframework.web.bind.annotation.PostMapping;
 import org.springframework.web.bind.annotation.PutMapping;
@@ -86,4 +88,25 @@ public class AdminApiController {
     adminService.updateMembers(uuid, updateReq);
     return ApiResponseDto.createOK(UUID.randomUUID());
   }
+
+  @Operation(summary = "사번 중복 체크", description = "사번 중복 체크")
+  @ApiResponses(
+      value = {
+        @ApiResponse(
+            responseCode = "200",
+            description = "조회 성공",
+            content =
+                @Content(
+                    mediaType = "application/json",
+                    schema = @Schema(implementation = Boolean.class))),
+        @ApiResponse(responseCode = "400", description = "잘못된 요청 데이터", content = @Content),
+        @ApiResponse(responseCode = "404", description = "코드를 찾을 수 없음", content = @Content),
+        @ApiResponse(responseCode = "500", description = "서버 오류", content = @Content)
+      })
+  @GetMapping("/{employeeNo}")
+  public ApiResponseDto<Boolean> checkEmployeeNo(
+      @Parameter(description = "중복 체크할 사번", required = true, example = "1234567") @PathVariable
+          String employeeNo) {
+    return ApiResponseDto.ok(adminService.existsByEmployeeNo(employeeNo));
+  }
 }
diff --git a/src/main/java/com/kamco/cd/kamcoback/members/service/AdminService.java b/src/main/java/com/kamco/cd/kamcoback/members/service/AdminService.java
index 8976eb8a..b00c6118 100644
--- a/src/main/java/com/kamco/cd/kamcoback/members/service/AdminService.java
+++ b/src/main/java/com/kamco/cd/kamcoback/members/service/AdminService.java
@@ -42,4 +42,14 @@ public class AdminService {
   public void updateMembers(UUID uuid, MembersDto.UpdateReq updateReq) {
     membersCoreService.updateMembers(uuid, updateReq);
   }
+
+  /**
+   * 사번 중복 체크
+   *
+   * @param employeeNo
+   * @return
+   */
+  public boolean existsByEmployeeNo(String employeeNo) {
+    return membersCoreService.existsByEmployeeNo(employeeNo);
+  }
 }
diff --git a/src/main/java/com/kamco/cd/kamcoback/postgres/core/MembersCoreService.java b/src/main/java/com/kamco/cd/kamcoback/postgres/core/MembersCoreService.java
index 1c3ffbd0..5d3b1111 100644
--- a/src/main/java/com/kamco/cd/kamcoback/postgres/core/MembersCoreService.java
+++ b/src/main/java/com/kamco/cd/kamcoback/postgres/core/MembersCoreService.java
@@ -178,4 +178,14 @@ public class MembersCoreService {
     memberEntity.setLoginFailCount(0);
     membersRepository.save(memberEntity);
   }
+
+  /**
+   * 사번 중복체크
+   *
+   * @param employeeNo
+   * @return
+   */
+  public boolean existsByEmployeeNo(String employeeNo) {
+    return membersRepository.existsByEmployeeNo(employeeNo);
+  }
 }
diff --git a/src/main/resources/application-dev.yml b/src/main/resources/application-dev.yml
index a06fba7a..6960eaee 100644
--- a/src/main/resources/application-dev.yml
+++ b/src/main/resources/application-dev.yml
@@ -57,13 +57,18 @@ token:
   refresh-cookie-name: kamco-dev   # 개발용 쿠키 이름
   refresh-cookie-secure: false   # 로컬 http 테스트면 false
 
+springdoc:
+  swagger-ui:
+    persist-authorization: true # 스웨거 새로고침해도 토큰 유지, 로컬스토리지에 저장
+
 logging:
   level:
     org:
       springframework:
         security: DEBUG
     org.springframework.security: DEBUG
-    
+
+
 mapsheet:
   upload:
     skipGdalValidation: true
diff --git a/src/main/resources/application-local.yml b/src/main/resources/application-local.yml
index 78387204..f03bc5f3 100644
--- a/src/main/resources/application-local.yml
+++ b/src/main/resources/application-local.yml
@@ -38,4 +38,10 @@ token:
   refresh-cookie-name: kamco-local   # 개발용 쿠키 이름
   refresh-cookie-secure: false   # 로컬 http 테스트면 false
 
+springdoc:
+  swagger-ui:
+    persist-authorization: true # 스웨거 새로고침해도 토큰 유지, 로컬스토리지에 저장
+
+
+