diff --git a/tests/benchmark/milvus_benchmark/main.py b/tests/benchmark/milvus_benchmark/main.py
index d403f38219078450e43122a7620b7a9a741432c2..d0c01d826b739b9c25e29f32ed6b926866f60dc1 100644
--- a/tests/benchmark/milvus_benchmark/main.py
+++ b/tests/benchmark/milvus_benchmark/main.py
@@ -50,6 +50,7 @@ def run_suite(run_type, suite, env_mode, env_params, timeout=None):
         start_status = False
         # Initialize the class of the reported metric
         metric = api.Metric()
+        global_params.metric = metric
         deploy_mode = env_params["deploy_mode"]
         deploy_opology = env_params["deploy_opology"] if "deploy_opology" in env_params else None
         env = get_env(env_mode, deploy_mode)