diff --git a/kcsc-back-end/src/main/java/com/dbnt/kcscbackend/admin/committee/schedules/controller/SchedulesApiController.java b/kcsc-back-end/src/main/java/com/dbnt/kcscbackend/admin/committee/schedules/controller/SchedulesApiController.java
index ef46a32..835274f 100644
--- a/kcsc-back-end/src/main/java/com/dbnt/kcscbackend/admin/committee/schedules/controller/SchedulesApiController.java
+++ b/kcsc-back-end/src/main/java/com/dbnt/kcscbackend/admin/committee/schedules/controller/SchedulesApiController.java
@@ -14,6 +14,7 @@ import com.dbnt.kcscbackend.auth.repository.UserInfoRepository;
 import com.dbnt.kcscbackend.config.common.ResponseCode;
 import com.dbnt.kcscbackend.config.common.ResultVO;
 import com.dbnt.kcscbackend.config.egov.EgovMessageSource;
+import io.swagger.models.auth.In;
 import io.swagger.v3.oas.annotations.Operation;
 import io.swagger.v3.oas.annotations.responses.ApiResponse;
 import io.swagger.v3.oas.annotations.responses.ApiResponses;
@@ -665,4 +666,29 @@ public class SchedulesApiController {
 		return egovIndvdlSchdulManageService.ScheduleInit(resultVO);
 	}
 
+
+	/**
+	 * '위원회 일정 등록' 페이지에서 심의위원회 첫 번째 거 선택 시, 하위 목록 불러오는 API
+	 * @param paramCodeGroup 상위 그룹 번호
+	 * @return
+	 * @throws Exception
+	 */
+	@Operation(
+			summary = "'위원회 일정 등록' 페이지에서 심의위원회 첫 번째 거 선택 시, 하위 목록 불러오는 API",
+			description = "관리자 단에서 '위원회 관리' > '위원회 일정 관리'에 '등록' 버튼을 누른 후 '위원회 일정 등록' 페이지에서 심의위원회 첫 번째 거 선택 시, 하위 목록 불러오는 API",
+			tags = {"SchedulesApiController"}
+	)
+	@ApiResponses(value = {
+			@ApiResponse(responseCode = "200", description = "조회 성공"),
+			@ApiResponse(responseCode = "403", description = "인가된 사용자가 아님")
+	})
+	@GetMapping(value = "/schedule/api/org-api/depth/list")
+	public ResultVO ScheduleApiOrgApiDepthList(@RequestParam Integer paramCodeGroup) throws Exception {
+		ResultVO resultVO = new ResultVO();
+		return egovIndvdlSchdulManageService.ScheduleApiOrgApiDepthList(resultVO, paramCodeGroup);
+	}
+
+
+
+
 }
\ No newline at end of file
diff --git a/kcsc-back-end/src/main/java/com/dbnt/kcscbackend/admin/committee/schedules/service/EgovIndvdlSchdulManageService.java b/kcsc-back-end/src/main/java/com/dbnt/kcscbackend/admin/committee/schedules/service/EgovIndvdlSchdulManageService.java
index 9ad0169..e5cdde1 100644
--- a/kcsc-back-end/src/main/java/com/dbnt/kcscbackend/admin/committee/schedules/service/EgovIndvdlSchdulManageService.java
+++ b/kcsc-back-end/src/main/java/com/dbnt/kcscbackend/admin/committee/schedules/service/EgovIndvdlSchdulManageService.java
@@ -105,10 +105,9 @@ public interface EgovIndvdlSchdulManageService {
 	 */
 	public void updateIndvdlSchdulManage(IndvdlSchdulManageVO indvdlSchdulManageVO) throws Exception;
 
-	/**
-	 * 일정를(을) 수정한다.
-	 * @return
-	 * @throws Exception
-	 */
+
 	public ResultVO ScheduleInit(ResultVO resultVO) throws Exception;
+
+	public ResultVO ScheduleApiOrgApiDepthList(ResultVO resultVO, Integer paramCodeGroup) throws Exception;
+
 }
\ No newline at end of file
diff --git a/kcsc-back-end/src/main/java/com/dbnt/kcscbackend/admin/committee/schedules/service/impl/EgovIndvdlSchdulManageServiceImpl.java b/kcsc-back-end/src/main/java/com/dbnt/kcscbackend/admin/committee/schedules/service/impl/EgovIndvdlSchdulManageServiceImpl.java
index adf340d..d1fc5d8 100644
--- a/kcsc-back-end/src/main/java/com/dbnt/kcscbackend/admin/committee/schedules/service/impl/EgovIndvdlSchdulManageServiceImpl.java
+++ b/kcsc-back-end/src/main/java/com/dbnt/kcscbackend/admin/committee/schedules/service/impl/EgovIndvdlSchdulManageServiceImpl.java
@@ -154,12 +154,37 @@ public class EgovIndvdlSchdulManageServiceImpl extends EgovAbstractServiceImpl i
 		List<String> listCodes = tcCodeItemRepository.findByGrpCdAndUseYnOrderByGrpOrder("EVT_TYPE", "Y").stream()
 				.map(lc -> lc.getItemNm())
 				.collect(Collectors.toList());
+		List<String> listSubOrg = tnCmtOrgRepository.findByUseYnAndUpCmtSeqOrderByCmtOrder("Y", 3).stream()
+				.map(lc -> lc.getCmtNm())
+				.collect(Collectors.toList());
 		List<String> listTopOrg = tnCmtOrgRepository.findByUseYnAndUpCmtSeqOrderByCmtOrder("Y", 2).stream()
 				.map(lc -> lc.getCmtNm())
 				.collect(Collectors.toList());
 
 		resultMap.put("listCodes", listCodes);
-		resultMap.put("listSubOrg", "");
+		resultMap.put("listSubOrg", listSubOrg);
+		resultMap.put("listTopOrg", listTopOrg);
+		resultVO.setResult(resultMap);
+
+		return resultVO;
+	}
+
+	@Override
+	public ResultVO ScheduleApiOrgApiDepthList(ResultVO resultVO, Integer paramCodeGroup) throws Exception {
+		Map<String, Object> resultMap = new HashMap<String, Object>();
+
+		List<String> listCodes = tcCodeItemRepository.findByGrpCdAndUseYnOrderByGrpOrder("EVT_TYPE", "Y").stream()
+				.map(lc -> lc.getItemNm())
+				.collect(Collectors.toList());
+		List<String> listSubOrg = tnCmtOrgRepository.findByUseYnAndUpCmtSeqOrderByCmtOrder("Y", 3).stream()
+				.map(lc -> lc.getCmtNm())
+				.collect(Collectors.toList());
+		List<String> listTopOrg = tnCmtOrgRepository.findByUseYnAndUpCmtSeqOrderByCmtOrder("Y", 2).stream()
+				.map(lc -> lc.getCmtNm())
+				.collect(Collectors.toList());
+
+		resultMap.put("listCodes", listCodes);
+		resultMap.put("listSubOrg", listSubOrg);
 		resultMap.put("listTopOrg", listTopOrg);
 		resultVO.setResult(resultMap);