diff --git a/README.md b/README.md
index d2854e345d95ab86e607b84eac6929ab0568c3a3..b042ac598dba4ce9af5fc1b822ddffd87b938fdc 100644
--- a/README.md
+++ b/README.md
@@ -61,7 +61,7 @@ python -m paddle_serving_server.serve --model uci_housing_model --thread 10 --po
 
 | Argument | Type | Default | Description |
 |--------------|------|-----------|--------------------------------|
-| `thread` | int | `10` | Concurrency of current service |
+| `thread` | int | `4` | Concurrency of current service |
 | `port` | int | `9292` | Exposed port of current service to users|
 | `name` | str | `""` | Service name, can be used to generate HTTP request url |
 | `model` | str | `""` | Path of paddle model directory to be served |