diff --git a/docs/en/docs/Virtualization/environment-preparation.md b/docs/en/docs/Virtualization/environment-preparation.md
index b9c39a0897156e257aca2b00c1e628b2fb393ce5..709189530103bc09ebc6ed597c4e2b3b163e0589 100644
--- a/docs/en/docs/Virtualization/environment-preparation.md
+++ b/docs/en/docs/Virtualization/environment-preparation.md
@@ -246,7 +246,10 @@ The following describes how to set up an Open vSwitch layer-1 bridge br0.
 
 4. Assign an IP address to OVS bridge br0.
     - If a DHCP server is available, set a dynamic IP address through the dhclient.
-
+    > ![](./public_sys-resources/icon-note.gif) **illustrate：**
+    > 
+    > If you use DHCP to set a dynamic IP address for br0, you need to clear the existing dynamic IP address. Run the dhclient -r command to clear the possible dynamic IP addresses.
+        
         ```shell
         dhclient br0
         ```
@@ -364,4 +367,4 @@ To allow a non-root user to run the virsh commands to manage VMs, perform the fo
 
    ```xml
    <seclabel type='dynamic' model='dac' relabel='yes'>
-   ```
+   ```
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