diff --git a/tests/python_client/chaos/README.md b/tests/python_client/chaos/README.md
index 22a1b505d1..37648f8529 100644
--- a/tests/python_client/chaos/README.md
+++ b/tests/python_client/chaos/README.md
@@ -33,6 +33,8 @@ Set the pod（querynode, indexnode and datanode）as multiple replicas, make one
 
 #### pod memory stress
 
+Limit the memory resource of pod and generate plenty of stresses over a group of pods
+
 ### Milvus in standalone mode
 1. standalone pod is killed