diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index e9a1708..20dc058 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -10,7 +10,7 @@ jobs:
   Run-PR-Test:
     runs-on: ubuntu-latest
     permissions:
-      contents: read
+      contents: write
       pull-requests: write
       checks: write
 
@@ -24,6 +24,13 @@ jobs:
           java-version: '21'
           distribution: 'temurin'
 
+      - name: Cache SonarQube packages
+        uses: actions/cache@v4
+        with:
+          path: ~/.sonar/cache
+          key: ${{ runner.os }}-sonar
+          restore-keys: ${{ runner.os }}-sonar
+
       - name: Gradle cache
         uses: actions/cache@v4
         with:
@@ -43,7 +50,9 @@ jobs:
           echo "${{ secrets.FIREBASE_ADMINSDK_ACCOUNT_KEY }}" > src/main/resources/firebase/firebase-adminsdk-account.json
 
       - name: Run Gradle Test
-        run: ./gradlew clean test
+        env:
+          SONAR_TOKEN: ${{ secrets.SONAR_TOKEN }}
+        run: ./gradlew clean test jacocoTestReport sonar
 
       - name: Publish Unit Test Results
         if: always()
@@ -53,3 +62,11 @@ jobs:
           check_name: '테스트 결과 🛠️'
           check_run_annotations: 'none'
           comment_mode: 'off'
+
+      - name: Comment coverage on PR
+        uses: madrapps/jacoco-report@v1.6
+        with:
+          paths: build/reports/jacoco/test/jacocoTestReport.xml
+          token: ${{ secrets.GITHUB_TOKEN }}
+          min-coverage-overall: 90
+          min-coverage-changed-files: 100
diff --git a/build.gradle b/build.gradle
index 2eb6b76..8e84767 100644
--- a/build.gradle
+++ b/build.gradle
@@ -1,5 +1,7 @@
 plugins {
     id 'java'
+    id 'jacoco'
+    id "org.sonarqube" version "7.2.0.6526"
     id 'org.springframework.boot' version '3.5.3'
     id 'io.spring.dependency-management' version '1.1.7'
 }
@@ -7,6 +9,17 @@ plugins {
 group = 'com.daedan'
 version = '0.0.1-SNAPSHOT'
 
+jacoco {
+    toolVersion = "0.8.14"
+}
+
+sonar {
+    properties {
+        property "sonar.projectKey", "festabook_backend"
+        property "sonar.organization", "festabook"
+    }
+}
+
 java {
     toolchain {
         languageVersion = JavaLanguageVersion.of(21)
@@ -88,3 +101,28 @@ tasks.named('test') {
 springBoot {
     buildInfo()
 }
+
+test {
+    useJUnitPlatform()
+}
+
+jacocoTestReport {
+    dependsOn test
+
+    classDirectories.setFrom(
+            files(classDirectories.files.collect {
+                fileTree(dir: it, exclude: [
+                        "**/*Application*",
+                        "**/*Config*",
+                        "**/*Aspect*",
+                        "**/*Logging*"
+                ])
+            })
+    )
+
+    reports {
+        html.required = true
+        xml.required = true
+        csv.required = false
+    }
+}