diff --git a/.github/workflows/backend-ci-cd.yml b/.github/workflows/backend-ci-cd.yml
index dfaecd8..7c65860 100644
--- a/.github/workflows/backend-ci-cd.yml
+++ b/.github/workflows/backend-ci-cd.yml
@@ -61,44 +61,53 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
+      # 1. 코드 체크아웃
       - name: Checkout code
         uses: actions/checkout@v3
 
+      # 2. JDK 17 설치
       - name: Set up JDK 17
         uses: actions/setup-java@v3
         with:
           java-version: '17'
           distribution: 'temurin'
 
+      # 3. 빌드 아티팩트 다운로드
       - name: Download Build Artifacts
         uses: actions/download-artifact@v3
         with:
           name: build-artifact
 
+      # 4. JAR 파일 확인
       - name: Verify JAR File
-        working-directory: HalfFifty_BE
         run: ls -la /home/runner/work/HalfFifty/HalfFifty
 
-      - name: Set Permissions for JAR File
-        run: chmod 644 /home/runner/work/HalfFifty/HalfFifty/HalfFifty_BE-0.0.1-SNAPSHOT.jar
+      # 5. SSH 키 파일 생성 및 권한 설정
+      - name: Set permissions for private key
+        run: |
+          echo "${{ secrets.AWS_KEY }}" > HalfFifty.pem
+          chmod 600 HalfFifty.pem
 
+      # 6. JAR 파일 EC2로 업로드
       - name: Upload JAR to EC2
         uses: appleboy/scp-action@v0.1.2
         with:
           host: ${{ secrets.AWS_IP }}
           username: ${{ secrets.AWS_USER }}
-          key: ${{ secrets.AWS_KEY }}
+          key: HalfFifty.pem
           source: /home/runner/work/HalfFifty/HalfFifty/HalfFifty_BE-0.0.1-SNAPSHOT.jar
           target: ~/HalfFifty_BE-0.0.1-SNAPSHOT.jar
 
+      # 7. Docker Compose를 사용하여 EC2에서 배포
       - name: Deploy to EC2 using Docker Compose
         uses: appleboy/ssh-action@v0.1.2
         with:
           host: ${{ secrets.AWS_IP }}
           username: ${{ secrets.AWS_USER }}
-          key: ${{ secrets.AWS_KEY }}
+          key: HalfFifty.pem
           script: |
             cd ~
             docker-compose down || true
             docker-compose up -d --build
 
+
diff --git a/HalfFifty_BE/src/main/java/HalfFifty/HalfFifty_BE/HealthCheck.java b/HalfFifty_BE/src/main/java/HalfFifty/HalfFifty_BE/HealthCheck.java
index f50812b..69fdd02 100644
--- a/HalfFifty_BE/src/main/java/HalfFifty/HalfFifty_BE/HealthCheck.java
+++ b/HalfFifty_BE/src/main/java/HalfFifty/HalfFifty_BE/HealthCheck.java
@@ -8,6 +8,6 @@ public class HealthCheck {
 
     @GetMapping("/")
     public String health() {
-        return "server on!!!!!";
+        return "server on!";
     }
 }