diff --git a/codecov.yml b/codecov.yml
new file mode 100644
index 0000000000..b882b3989c
--- /dev/null
+++ b/codecov.yml
@@ -0,0 +1,2 @@
+ignore:
+  - "source/**/tests"
diff --git a/source/api_cc/tests/CMakeLists.txt b/source/api_cc/tests/CMakeLists.txt
index 06c73ae62b..8692f5427d 100644
--- a/source/api_cc/tests/CMakeLists.txt
+++ b/source/api_cc/tests/CMakeLists.txt
@@ -79,10 +79,22 @@ endif()
 file(GLOB TEST_SRC test_*.cc)
 add_executable( runUnitTests ${TEST_SRC} )
 
+add_library(coverage_config INTERFACE)
+target_compile_options(coverage_config INTERFACE
+  -O0        # no optimization
+  -g         # generate debug info
+  --coverage # sets all required flags
+)
+if(CMAKE_VERSION VERSION_GREATER_EQUAL 3.13)
+  target_link_options(coverage_config INTERFACE --coverage)
+else()
+  target_link_libraries(coverage_config INTERFACE --coverage)
+endif()
+
 if (USE_CUDA_TOOLKIT)
-  target_link_libraries(runUnitTests gtest gtest_main ${libname} ${apiname} ${opname} pthread ${TensorFlow_LIBRARY} deepmd_op_cuda)
+  target_link_libraries(runUnitTests gtest gtest_main ${libname} ${apiname} ${opname} pthread ${TensorFlow_LIBRARY} deepmd_op_cuda coverage_config)
 else()
-  target_link_libraries(runUnitTests gtest gtest_main ${libname} ${apiname} ${opname} pthread ${TensorFlow_LIBRARY})
+  target_link_libraries(runUnitTests gtest gtest_main ${libname} ${apiname} ${opname} pthread ${TensorFlow_LIBRARY} coverage_config)
 endif()
 add_test( runUnitTests runUnitTests )
 
diff --git a/source/install/test_cc.sh b/source/install/test_cc.sh
index f28bff9e7b..60463c5bc9 100755
--- a/source/install/test_cc.sh
+++ b/source/install/test_cc.sh
@@ -31,3 +31,8 @@ make -j${NPROC}
 cd ${SCRIPT_PATH}/../api_cc/tests
 ${BUILD_TMP_DIR}/runUnitTests
 
+#------------------
+# upload to codecov
+cd ${SCRIPT_PATH}
+bash <(curl -s https://codecov.io/bash) || echo "Codecov did not collect coverage reports"
+
diff --git a/source/lib/tests/CMakeLists.txt b/source/lib/tests/CMakeLists.txt
index d03eae2e0e..03242ba8dd 100644
--- a/source/lib/tests/CMakeLists.txt
+++ b/source/lib/tests/CMakeLists.txt
@@ -43,6 +43,18 @@ endif()
 file(GLOB TEST_SRC test_*.cc)
 add_executable( runUnitTests ${TEST_SRC} )
 
+add_library(coverage_config INTERFACE)
+target_compile_options(coverage_config INTERFACE
+  -O0        # no optimization
+  -g         # generate debug info
+  --coverage # sets all required flags
+)
+if(CMAKE_VERSION VERSION_GREATER_EQUAL 3.13)
+  target_link_options(coverage_config INTERFACE --coverage)
+else()
+  target_link_libraries(coverage_config INTERFACE --coverage)
+endif()
+
 find_package(Threads)
 # find openmp
 find_package(OpenMP)
@@ -52,9 +64,9 @@ if (OPENMP_FOUND)
 endif()
 
 if (USE_CUDA_TOOLKIT)
-  target_link_libraries(runUnitTests gtest gtest_main ${libname} pthread deepmd_op_cuda)
+  target_link_libraries(runUnitTests gtest gtest_main ${libname} pthread deepmd_op_cuda coverage_config)
 else()
-  target_link_libraries(runUnitTests gtest gtest_main ${libname} pthread)
+  target_link_libraries(runUnitTests gtest gtest_main ${libname} pthread coverage_config)
 endif()
 add_test( runUnitTests runUnitTests )