diff --git a/.github/workflows/lcov.yml b/.github/workflows/lcov.yml
new file mode 100644
index 00000000..f33d9ef1
--- /dev/null
+++ b/.github/workflows/lcov.yml
@@ -0,0 +1,42 @@
+name: Coverage
+
+on:
+  push:
+    branches: [ "main" ]
+  pull_request:
+    branches: [ "main" ]
+
+jobs:
+  coverage:
+    name: Test Coverage
+    runs-on: ubuntu-latest
+    container:
+      image: vsaglib/vsag:ubuntu
+    steps:
+      - uses: actions/checkout@v4
+      - name: Load Cache
+        uses: actions/cache@v4.1.2
+        with:
+          path: ./build/
+          key: build-${{ hashFiles('./CMakeLists.txt') }}-${{ hashFiles('./.circleci/fresh_ci_cache.commit') }}
+      - name: Compile
+        run: make cov
+      - name: Run Test
+        run: |
+          ./scripts/test_parallel_bg.sh
+          ./build/mockimpl/tests_mockimpl -d yes ${UT_FILTER} --allow-running-no-tests ${UT_SHARD}
+      - name: Collect Coverage Info
+        run: bash scripts/collect_cpp_coverage.sh
+      - name: Generate HTML
+        run: genhtml --output-directory coverage/html coverage/coverage.info
+      - name: Upload HTML coverage report
+        uses: actions/upload-artifact@v4
+        with:
+          name: coverage-report-${{ github.run_id }}
+          path: coverage/html/
+          compression-level: 1
+          retention-days: 3
+          overwrite: 'true'
+      - name: Set Threshold
+        run: bash ./scripts/check_cov.sh
+
diff --git a/Makefile b/Makefile
index 0143968b..ee6f8361 100644
--- a/Makefile
+++ b/Makefile
@@ -100,8 +100,8 @@ test_cov: cov            ## Build and run unit tests with code coverage enabled.
 	./build/tests/unittests -d yes ${UT_FILTER} --allow-running-no-tests ${UT_SHARD}
 	./build/tests/functests -d yes ${UT_FILTER} --allow-running-no-tests ${UT_SHARD}
 	./build/mockimpl/tests_mockimpl -d yes ${UT_FILTER} --allow-running-no-tests ${UT_SHARD}
-	bash scripts/aci/collect_cpp_coverage.sh
-	genhtml --output-directory testresult/coverage/html testresult/coverage/coverage.info --ignore-errors inconsistent,inconsistent
+	bash scripts/collect_cpp_coverage.sh
+	genhtml --output-directory coverage/coverage/html coverage/coverage.info --ignore-errors inconsistent,inconsistent
 
 .PHONY: clean
 clean:                   ## Clear build/ directory.
diff --git a/scripts/check_cov.sh b/scripts/check_cov.sh
new file mode 100644
index 00000000..2888fcc4
--- /dev/null
+++ b/scripts/check_cov.sh
@@ -0,0 +1,11 @@
+#!/bin/bash
+
+line_coverage=`lcov --summary coverage/coverage.info | grep "lines......" | awk '/lines/ { print $2 }' | cut -d '%' -f 1`
+line_coverage=$(printf "%.0f" $line_coverage)
+if [ "$line_coverage" -gt 84 ]; then
+  echo "line coverage is ${line_coverage}, more than 84"
+  exit 0;
+else
+  echo "line coverage is ${line_coverage}, less than 84"
+  exit 1;
+fi
diff --git a/scripts/collect_cpp_coverage.sh b/scripts/collect_cpp_coverage.sh
new file mode 100644
index 00000000..c788a3bf
--- /dev/null
+++ b/scripts/collect_cpp_coverage.sh
@@ -0,0 +1,42 @@
+#!/bin/bash
+
+set -e
+set -x
+
+SCRIPTS_DIR="$( cd "$( dirname "${BASH_SOURCE[0]}" )" && pwd )"
+ROOT_DIR="${SCRIPTS_DIR}/../"
+
+COVERAGE_DIR="${ROOT_DIR}/coverage"
+if [ -d "${COVERAGE_DIR}" ]; then
+    rm -rf "${COVERAGE_DIR:?}"/*
+else
+    mkdir -p "${COVERAGE_DIR}"
+fi
+
+lcov --gcov-tool ${SCRIPTS_DIR}/gcov_for_clang.sh \
+     --rc branch_coverage=1 \
+     --rc geninfo_unexecuted_blocks=1 \
+     --include "*/vsag/include/*" \
+     --include "*/vsag/src/*" \
+     --exclude "*/vsag/include/vsag/expected.hpp*" \
+     --exclude "*_test.cpp" \
+     --capture \
+     --directory . \
+     --output-file  "${COVERAGE_DIR}/coverage_ut.info"
+
+pushd "${COVERAGE_DIR}"
+coverages=$(ls coverage_*.info)
+if [ ! "$coverages" ];then
+    echo "no coverage file"
+    exit 0
+fi
+lcov_command="lcov"
+for coverage in $coverages; do
+    echo "$coverage"
+    lcov_command="$lcov_command -a $coverage"
+done
+$lcov_command -o coverage.info \
+        --rc branch_coverage=1 \
+        --ignore-errors inconsistent,inconsistent \
+        --ignore-errors corrupt,corrupt
+popd
diff --git a/scripts/gcov_for_clang.sh b/scripts/gcov_for_clang.sh
new file mode 100755
index 00000000..ec6863ca
--- /dev/null
+++ b/scripts/gcov_for_clang.sh
@@ -0,0 +1,3 @@
+#!/bin/bash
+exec gcov "$@"
+