diff --git a/WebContent/WEB-INF/classes/com/pms/salesmgmt/mapper/salesNcollectMgmt.xml b/WebContent/WEB-INF/classes/com/pms/salesmgmt/mapper/salesNcollectMgmt.xml
index a50c020..090effa 100644
--- a/WebContent/WEB-INF/classes/com/pms/salesmgmt/mapper/salesNcollectMgmt.xml
+++ b/WebContent/WEB-INF/classes/com/pms/salesmgmt/mapper/salesNcollectMgmt.xml
@@ -1755,6 +1755,33 @@ ORDER BY T.REGDATE DESC, T.PROJECT_NO DESC
 		ORDER BY SL.shipping_date DESC, SL.log_id DESC
 	</select>
 	
+	<!-- sales_registration의 sales_quantity를 shipment_log 합계로 업데이트 -->
+	<update id="updateSalesQuantityFromShipmentLog" parameterType="map">
+		/* salesNcollectMgmt.updateSalesQuantityFromShipmentLog - shipment_log 합계로 sales_quantity 업데이트 */
+		UPDATE sales_registration
+		SET sales_quantity = (
+			SELECT COALESCE(SUM(split_quantity), 0)
+			FROM shipment_log
+			WHERE target_objid = #{projectNo}
+		),
+		sales_supply_price = (
+			SELECT COALESCE(SUM(sales_supply_price), 0)
+			FROM shipment_log
+			WHERE target_objid = #{projectNo}
+		),
+		sales_vat = (
+			SELECT COALESCE(SUM(sales_vat), 0)
+			FROM shipment_log
+			WHERE target_objid = #{projectNo}
+		),
+		sales_total_amount = (
+			SELECT COALESCE(SUM(sales_total_amount), 0)
+			FROM shipment_log
+			WHERE target_objid = #{projectNo}
+		)
+		WHERE sale_no = #{saleNo}
+	</update>
+	
 	<!-- 거래명세서 - 고객 정보 조회 -->
 	<select id="getCustomerInfoByProjectNo" parameterType="map" resultType="map">
 		/* salesNcollectMgmt.getCustomerInfoByProjectNo - 프로젝트 번호로 고객 정보 조회 */
diff --git a/src/com/pms/salesmgmt/service/SalesNcollectMgmtService.java b/src/com/pms/salesmgmt/service/SalesNcollectMgmtService.java
index 8150751..d4e08b3 100644
--- a/src/com/pms/salesmgmt/service/SalesNcollectMgmtService.java
+++ b/src/com/pms/salesmgmt/service/SalesNcollectMgmtService.java
@@ -441,11 +441,18 @@ public Map<String, Object> saveSaleRegistration(HttpServletRequest request, Map<
 	System.out.println("  cretEmpNo: " + paramMap.get("cretEmpNo"));
 	
 	sqlSession.insert("salesNcollectMgmt.insertShipmentLog", paramMap);
-			
-			sqlSession.commit();
-			resultMap.put("result", true);
-			resultMap.put("msg", "저장되었습니다.");
-			System.out.println("=== 저장 성공 ===");
+	
+	// 4. sales_registration의 sales_quantity를 shipment_log 합계로 업데이트
+	System.out.println("sales_registration 업데이트 - shipment_log 합계 반영");
+	Map<String, Object> updateParam = new HashMap<String, Object>();
+	updateParam.put("projectNo", projectNo);
+	updateParam.put("saleNo", saleNoObj);
+	sqlSession.update("salesNcollectMgmt.updateSalesQuantityFromShipmentLog", updateParam);
+		
+		sqlSession.commit();
+		resultMap.put("result", true);
+		resultMap.put("msg", "저장되었습니다.");
+		System.out.println("=== 저장 성공 ===");
 		} catch(Exception e) {
 			if(sqlSession != null) {
 				sqlSession.rollback();