diff --git a/services/scheduleService.js b/services/scheduleService.js
index 9b6f6b81914ad8876cec5bf52f0cb23529a99919..7fd1707a4d49fe9f43b38d22c644ad88f605ddb7 100644
--- a/services/scheduleService.js
+++ b/services/scheduleService.js
@@ -19,6 +19,8 @@ class schedulService {
      * �ъ슜�� �ㅼ�以� �앹꽦
      */
     async createSchedule({ userId, title, start_time, end_time, is_fixed }) {
+        const transaction = await Schedule.sequelize.transaction();
+
         try {
 
             // �쇱젙 �쒖옉 �쒓컙 - 醫낅즺 �쒓컙 �좏슚�� 寃���
@@ -41,9 +43,11 @@ class schedulService {
                 expiry_date: is_fixed ? null : this.getNextMonday()
             };
 
-            const schedule = await Schedule.create(scheduleData);
+            const schedule = await Schedule.create(scheduleData, { transaction });
+            await transaction.commit();
             return schedule;
         } catch (error) {
+            await transaction.rollback();
             throw new Error(`Failed to create schedule: ${error.message}`);
         }
     }
@@ -52,6 +56,8 @@ class schedulService {
      * �ъ슜�� �ㅼ�以� �섏젙
      */
     async updateSchedule(id, userId, updateData) {
+        const transaction = await Schedule.sequelize.transaction();
+
         try {
             const schedule = await Schedule.findOne({
                 where: { id, user_id: userId }
@@ -75,9 +81,11 @@ class schedulService {
             // �ㅼ�以� ���� 蹂�寃쏀븯吏� 紐삵븯�꾨줉 update媛� ��젣 -> 湲곗〈媛� �좎�
             delete updateData.is_fixed;
             
-            await schedule.update(updateData);
+            await schedule.update(updateData, { transaction });
+            await transaction.commit();
             return schedule;
         } catch (error) {
+            await transaction.rollback();
             throw new Error(`Failed to update schedule: ${error.message}`);
         }
     }
@@ -86,17 +94,22 @@ class schedulService {
      * �ъ슜�� �ㅼ�以� ��젣
      */
     async deleteSchedule(id, userId) {
+        const transaction = await Schedule.sequelize.transaction();
+
         try {
             const schedule = await Schedule.destroy({
-                where: { id, user_id: userId }
+                where: { id, user_id: userId },
+                transaction
             });
 
             if (!schedule) {
                 throw new Error('Schedule not found');
             }
 
+            await transaction.commit();
             return true;
         } catch (error) {
+            await transaction.rollback();
             throw new Error(`Failed to delete schedule: ${error.message}`);
         }
     }