diff --git a/.gitignore b/.gitignore
index 739cc003a..b0b069781 100644
--- a/.gitignore
+++ b/.gitignore
@@ -23,6 +23,7 @@ docker-compose-devcontainer.yml.tmp
 # Compiled source
 bin/
 lib/
+output/
 *.a
 *.so
 *.so.*
@@ -50,7 +51,7 @@ gtags.conf
 
 # codecov-cpp generated files
 lcov_*.info
-cpp_coverage/
+coverage/
 
 # virtualenv
 venv/
diff --git a/scripts/run_codecov.sh b/scripts/run_codecov.sh
new file mode 100755
index 000000000..5f9c5393d
--- /dev/null
+++ b/scripts/run_codecov.sh
@@ -0,0 +1,96 @@
+#!/usr/bin/env bash
+
+# Licensed to the LF AI & Data foundation under one
+# or more contributor license agreements. See the NOTICE file
+# distributed with this work for additional information
+# regarding copyright ownership. The ASF licenses this file
+# to you under the Apache License, Version 2.0 (the
+# "License"); you may not use this file except in compliance
+# with the License. You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+# Exit immediately for non zero status
+set -e
+
+SOURCE="${BASH_SOURCE[0]}"
+while [ -h "$SOURCE" ]; do # resolve $SOURCE until the file is no longer a symlink
+  DIR="$( cd -P "$( dirname "$SOURCE" )" && pwd )"
+  SOURCE="$(readlink "$SOURCE")"
+  [[ $SOURCE != /* ]] && SOURCE="$DIR/$SOURCE" # if $SOURCE was a relative symlink, we need to resolve it relative to the path where the symlink file was located
+done
+ROOT_DIR="$( cd -P "$( dirname "$SOURCE" )/.." && pwd )"
+
+KNOWHERE_CORE_DIR="${ROOT_DIR}/knowhere"
+KNOWHERE_UNITTEST_DIR="${ROOT_DIR}/output/unittest"
+
+echo "ROOT_DIR = ${ROOT_DIR}"
+echo "KNOWHERE_CORE_DIR = ${KNOWHERE_CORE_DIR}"
+echo "KNOWHERE_UNITTEST_DIR = ${KNOWHERE_UNITTEST_DIR}"
+
+LCOV_CMD="lcov"
+LCOV_GEN_CMD="genhtml"
+
+FILE_INFO_BASE="${ROOT_DIR}/lcov_base.info"
+FILE_INFO_UT="${ROOT_DIR}/lcov_ut.info"
+FILE_INFO_COMBINE="${ROOT_DIR}/lcov_combine.info"
+FILE_INFO_OUTPUT="${ROOT_DIR}/lcov_output.info"
+DIR_LCOV_OUTPUT="${ROOT_DIR}/coverage"
+DIR_GCNO="${ROOT_DIR}/cmake_build/"
+
+# delete old code coverage info files
+rm -f ${FILE_INFO_BASE}
+rm -f ${FILE_INFO_UT}
+rm -f ${FILE_INFO_COMBINE}
+rm -f ${FILE_INFO_OUTPUT}
+rm -rf ${DIR_LCOV_OUTPUT}
+
+# generate baseline
+${LCOV_CMD} -c -i -d ${DIR_GCNO} -o ${FILE_INFO_BASE}
+if [ $? -ne 0 ]; then
+    echo "generate ${FILE_INFO_BASE} failed"
+    exit 1
+fi
+
+# run unittest
+for test in `ls ${KNOWHERE_UNITTEST_DIR}`; do
+    echo "Running unittest: ${KNOWHERE_UNITTEST_DIR}/$test"
+    # run unittest
+    ${KNOWHERE_UNITTEST_DIR}/${test}
+    if [ $? -ne 0 ]; then
+        echo ${args}
+        echo ${${KNOWHERE_UNITTEST_DIR}/}/${test} "run failed"
+        exit 1
+    fi
+done
+
+# generate ut file
+${LCOV_CMD} -c -d ${DIR_GCNO} -o ${FILE_INFO_UT}
+
+# merge baseline and ut file
+${LCOV_CMD} -a ${FILE_INFO_BASE} -a ${FILE_INFO_UT} -o ${FILE_INFO_COMBINE}
+if [ $? -ne 0 ]; then
+    echo "generate ${FILE_INFO_COMBINE} failed"
+    exit 1
+fi
+
+# remove unnecessary info
+${LCOV_CMD} -r "${FILE_INFO_COMBINE}" -o "${FILE_INFO_OUTPUT}" \
+    "/usr/*" \
+    "*/unittest/*" \
+    "*/thirdparty/*"
+
+if [ $? -ne 0 ]; then
+    echo "generate ${FILE_INFO_OUTPUT} failed"
+    exit 1
+fi
+
+# generate html report
+${LCOV_GEN_CMD} ${FILE_INFO_OUTPUT} --output-directory ${DIR_LCOV_OUTPUT}
+echo "Generate code coverage report to ${DIR_LCOV_OUTPUT}"
diff --git a/unittest/CMakeLists.txt b/unittest/CMakeLists.txt
index 134e4c8fb..1cbbc6017 100755
--- a/unittest/CMakeLists.txt
+++ b/unittest/CMakeLists.txt
@@ -123,20 +123,21 @@ set( ALL_INDEXING_SRCS
 if ( LINUX )
     set(ALL_INDEXING_SRCS
             ${ALL_INDEXING_SRCS}
-            test_instructionset.cpp
+            test_annoy.cpp
+            test_binaryidmap.cpp
+            test_binaryivf.cpp
+            test_hnsw.cpp
             test_idmap.cpp
+            test_instructionset.cpp
             test_ivf.cpp
-            test_ivf_hnsw.cpp
             test_ivf_cpu_nm.cpp
-            test_binaryidmap.cpp
-            test_binaryivf.cpp
+            test_ivf_hnsw.cpp
+            test_ngtonng.cpp
+            test_ngtpanng.cpp
             test_nsg.cpp
-            test_hnsw.cpp
             test_rhnsw_flat.cpp
             test_rhnsw_pq.cpp
             test_rhnsw_sq8.cpp
-            test_ngtpanng.cpp
-            test_ngtonng.cpp
             )
     if ( KNOWHERE_GPU_VERSION )
         set(ALL_INDEXING_SRCS
@@ -156,4 +157,4 @@ endif ()
 add_executable( test_knowhere ${ALL_INDEXING_SRCS} )
 target_link_libraries( test_knowhere knowhere ${DEPEND_LIBS} )
 
-install(TARGETS test_knowhere)
+install(TARGETS test_knowhere DESTINATION unittest)