diff --git a/README.md b/README.md
index 4579a66..21e2b33 100644
--- a/README.md
+++ b/README.md
@@ -247,12 +247,20 @@ supported database:
 
 ```
 set NALI_DB=geoip
+
+or use powershell
+
+$env:NALI_DB="geoip"
 ```
 
 ##### Use ipip db
 
 ```
 set NALI_DB=ipip
+
+or use powershell
+
+$env:NALI_DB="ipip"
 ```
 
 #### Linux
diff --git a/README_zh-CN.md b/README_zh-CN.md
index fd45764..199e22a 100644
--- a/README_zh-CN.md
+++ b/README_zh-CN.md
@@ -251,12 +251,20 @@ $ nali update
 
 ```
 set NALI_DB=geoip
+
+或者使用 powershell
+
+$env:NALI_DB="geoip"
 ```
 
 ##### 使用ipip数据库
 
 ```
 set NALI_DB=ipip
+
+或者使用 powershell
+
+$env:NALI_DB="ipip"
 ```
 
 #### Linux平台