diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index 61fafa9..038f617 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -38,7 +38,7 @@ jobs:
     needs: generate-data
     strategy:
       matrix:
-        os: [ubuntu-latest, macos-latest, windows-latest, ubuntu-24.04-arm64]
+        os: [ubuntu-latest, macos-latest, windows-latest]
         ujson_use_rapidjson: ["OFF", "ON"]
     runs-on: ${{ matrix.os }}
     name: build-test (${{ matrix.os }}, RapidJSON=${{ matrix.ujson_use_rapidjson }})
@@ -61,18 +61,34 @@ jobs:
 
     - name: Configure
       run: |
-        cmake -B build -DCMAKE_BUILD_TYPE=Release -DUJSON_USE_RAPIDJSON=${{ matrix.ujson_use_rapidjson }}
+        cmake -B build -DCMAKE_BUILD_TYPE=Debug -DENABLE_COVERAGE=ON -DUJSON_USE_RAPIDJSON=${{ matrix.ujson_use_rapidjson }}
 
     - name: Build
       run: |
-        cmake --build build --config Release -j 4
+        cmake --build build --config Debug -j 4
 
     - name: Run Tests
       shell: bash
       run: |
         cd build
         if [[ "${{ runner.os }}" == "Windows" ]]; then
-          ./Release/test_main
+          ./Debug/test_main
         else
           ./test_main
         fi
+
+    - name: Collect Coverage (Linux/Mac)
+      if: runner.os != 'Windows'
+      run: |
+        # 创建覆盖率存放目录
+        mkdir -p coverage_data
+        # 查找所有生成的 .gcda 和 .gcno 文件并复制（保持目录结构平铺或打包）
+        find build -name "*.gcda" -exec cp {} coverage_data/ \;
+        find build -name "*.gcno" -exec cp {} coverage_data/ \;
+
+    - name: Upload Coverage Artifacts
+      if: runner.os != 'Windows'
+      uses: actions/upload-artifact@v4
+      with:
+        name: coverage-${{ matrix.os }}-${{ matrix.ujson_use_rapidjson }}
+        path: coverage_data/
diff --git a/CMakeLists.txt b/CMakeLists.txt
index 4edc28e..5ebfbd7 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -4,6 +4,14 @@ project(tokenizer LANGUAGES C CXX)
 set(CMAKE_CXX_STANDARD 11)
 set(CMAKE_CXX_STANDARD_REQUIRED ON)
 
+option(ENABLE_COVERAGE "Enable code coverage" OFF)
+if(ENABLE_COVERAGE)
+    if ("${CMAKE_CXX_COMPILER_ID}" MATCHES "Clang" OR "${CMAKE_CXX_COMPILER_ID}" MATCHES "GNU")
+        add_compile_options(--coverage)
+        add_link_options(--coverage)
+    endif()
+endif()
+
 # Include directories
 include_directories(include)
 include_directories(third_party)