diff --git a/configs/milvus.yaml b/configs/milvus.yaml
index 8cd6438de52574658968b034a620df536f434261..7a3d383c1b03cd5627e0f2b556d9b9ab3ae5903f 100644
--- a/configs/milvus.yaml
+++ b/configs/milvus.yaml
@@ -39,7 +39,7 @@ minio:
 pulsar:
   address: localhost
   port: 6650
-  maxMessageSize: 5242880 # 5 * 1024 * 1024 Bytes
+  maxMessageSize: 5242880 # 5 * 1024 * 1024 Bytes, Maximum size of each message in pulsar.
 
 rocksmq:
   path: /var/lib/milvus/rdb_data