diff --git a/src/repositories/myRepository.js b/src/repositories/myRepository.js
index d4af715c6f0927ade27d99175681732ceb36fcf1..213a49fb24ac36b47fc1a67a368a82294c990c56 100644
--- a/src/repositories/myRepository.js
+++ b/src/repositories/myRepository.js
@@ -81,6 +81,18 @@ const myRepository = {
     const { rowCount } = await pool.query(query, values);
     return rowCount > 0;
   },
+
+ async deleteCombinationById(combinationId) {
+  const query = `
+    UPDATE combinations
+    SET owner_id = NULL
+    WHERE id = $1
+  `;
+  const values = [combinationId];
+
+  const { rowCount } = await pool.query(query, values);
+  return rowCount > 0;
+}
 };
 
 export default myRepository;
diff --git a/src/routes/my.js b/src/routes/my.js
index ef5e99e2798d31b240d1440e3a4c627934f821a9..aa98c7a8e24894a1bd8394cbe1593611d0d9dac0 100644
--- a/src/routes/my.js
+++ b/src/routes/my.js
@@ -21,6 +21,31 @@ myRouter.get(
   })
 );
 
+myRouter.delete(
+  '/pc/:pcId',
+  authMiddleware,
+  wrapAsync(async (req, res) => {
+    const { pcId } = req.params;
+    const userId = req.user?.userId;
+
+    if (!userId) {
+      throw new ReportableError(400, '유효한 사용자 정보가 없습니다.');
+    }
+
+    if (!pcId) {
+      throw new ReportableError(400, 'PC ID가 필요합니다.');
+    }
+
+    const result = await myService.deleteUserPC(userId, pcId);
+
+    if (result.success) {
+      return res.sendResponse(result.message, 200, {});
+    } else {
+      throw new ReportableError(500, 'PC 삭제 중 문제가 발생했습니다.');
+    }
+  })
+);
+
 myRouter.patch(
   '/pc/:combinationId/name',
   authMiddleware,
diff --git a/src/services/myService.js b/src/services/myService.js
index c8bee06aa3a72722395314d5bdb40ce08c62ee70..1295252a5666fe1408ba12c310624ebe83509bfa 100644
--- a/src/services/myService.js
+++ b/src/services/myService.js
@@ -178,6 +178,36 @@ const myService = {
 
     return await ShareRepository.createCombinationUuid(combinationId);
   },
+
+  async deleteUserPC(userId, pcId) {
+    if (!userId || !pcId) {
+      throw new ReportableError(400, '유효한 사용자 ID 및 PC ID가 필요합니다.');
+    }
+
+    const userExists = await myRepository.checkUserExists(userId);
+    if (!userExists) {
+      throw new ReportableError(404, '사용자를 찾을 수 없습니다.');
+    }
+
+    const combination = await myRepository.getCombinationById(pcId);
+    if (!combination) {
+      throw new ReportableError(404, '해당 PC 조합을 찾을 수 없습니다.');
+    }
+
+    if (combination.userId !== userId) {
+      throw new ReportableError(403, '해당 PC 조합에 대한 권한이 없습니다.');
+    }
+
+    const deleted = await myRepository.deleteCombinationById(pcId);
+    if (!deleted) {
+      throw new ReportableError(500, 'PC 조합 삭제 중 문제가 발생했습니다.');
+    }
+
+    return {
+      success: true,
+      message: 'PC 조합이 성공적으로 삭제되었습니다.',
+    };
+  },
 };
 
 export default myService;