diff --git a/.github/workflows/test_coverage.yml b/.github/workflows/test_coverage.yml
new file mode 100644
index 0000000..70916cc
--- /dev/null
+++ b/.github/workflows/test_coverage.yml
@@ -0,0 +1,65 @@
+name: Test Coverage Validation
+
+on:
+  pull_request:
+    types:
+      [ opened, synchronize, reopened ]
+
+jobs:
+  Build-And-Test:
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Github Repository 파일 불러오기
+        uses: actions/checkout@v6
+        with:
+          fetch-depth: 0
+
+      - name: Setup Docker
+        uses: docker/setup-buildx-action@v3
+
+      - name: JDK 버전 21 설치
+        uses: actions/setup-java@v5
+        with:
+          distribution: corretto
+          java-version: 21
+
+      - name: Gradle Wrapper 실행 권한 부여
+        run: chmod +x ./gradlew
+
+      - name: 전체 빌드 및 테스트
+        run: ./gradlew --info test
+
+      - name: JaCoCo 커버리지 리포트 생성
+        id: jacoco_report
+        uses: madrapps/jacoco-report@v1.7.2
+        with:
+          paths: ${{ github.workspace }}/build/reports/jacoco/test/jacocoTestReport.xml
+          token: ${{ secrets.GITHUB_TOKEN }}
+          min-coverage-overall: 70
+          min-coverage-changed-files: 70
+          title: "🧪 테스트 커버리지 리포트"
+          update-comment: true
+
+      - name: Close PR, if build fail
+        if: ${{ failure() }}
+        uses: actions/github-script@v8
+        with:
+          github-token: ${{ secrets.GITHUB_TOKEN }}
+          script: |
+            const pull_number = ${{ github.event.pull_request.number }}
+            const updated_title = `[VALIDATION FAIL] ${{ github.event.pull_request.title }}`
+            await github.rest.pulls.createReview({
+              owner: context.repo.owner,
+              repo: context.repo.repo,
+              pull_number: pull_number,
+              body: '빌드 또는 테스트 커버리지 검증에 실패했습니다.',
+              event: 'REQUEST_CHANGES'
+            })
+            await github.rest.pulls.update({
+              owner: context.repo.owner,
+              repo: context.repo.repo,
+              pull_number: pull_number,
+              title: updated_title,
+              state: 'closed'
+            })
diff --git a/build.gradle b/build.gradle
index 119c878..1f0eec0 100644
--- a/build.gradle
+++ b/build.gradle
@@ -1,5 +1,6 @@
 plugins {
     id 'java'
+    id 'jacoco'
     id 'org.springframework.boot' version '3.5.9'
     id 'io.spring.dependency-management' version '1.1.7'
 }
@@ -34,10 +35,41 @@ dependencies {
     annotationProcessor 'org.projectlombok:lombok'
 
     testImplementation 'org.springframework.boot:spring-boot-starter-test'
+    testRuntimeOnly 'com.h2database:h2'
     testImplementation 'io.rest-assured:rest-assured'
     testRuntimeOnly 'org.junit.platform:junit-platform-launcher'
 }
 
 tasks.named('test') {
     useJUnitPlatform()
+    finalizedBy jacocoTestReport
 }
+
+jacoco {
+    toolVersion = "0.8.14"
+}
+
+jacocoTestReport {
+    reports {
+        html.required = true
+        xml.required = true
+        csv.required = true
+    }
+
+    afterEvaluate {
+        classDirectories.setFrom(files(classDirectories.files.collect {
+            fileTree(dir: it, exclude: [
+                    "**/*Application*",
+                    "**/common/**",
+                    "**/exception/**",
+                    "**/request/**",
+                    "**/response/**",
+                    "**/input/**",
+                    "**/output/**",
+                    "**/dto/**"
+            ])
+        }))
+    }
+    dependsOn test
+}
+
diff --git a/src/test/resources/application.yaml b/src/test/resources/application.yaml
new file mode 100644
index 0000000..663411b
--- /dev/null
+++ b/src/test/resources/application.yaml
@@ -0,0 +1,27 @@
+spring:
+  datasource:
+    url: jdbc:h2:mem:testdb;DB_CLOSE_DELAY=-1;MODE=MySQL
+    driver-class-name: org.h2.Driver
+    username: sa
+    password:
+
+  jpa:
+    hibernate:
+      ddl-auto: create-drop
+    properties:
+      hibernate:
+        format_sql: true
+        dialect: org.hibernate.dialect.H2Dialect
+
+  mail:
+    host: localhost
+    port: 3025
+    properties:
+      mail:
+        smtp:
+          auth: false
+          starttls:
+            enable: false
+
+auth:
+  base-url: http://localhost:8080