diff --git a/README.md b/README.md
index 1a1f536..a6d1238 100644
--- a/README.md
+++ b/README.md
@@ -53,6 +53,7 @@ Open the blueprint warehouse homepage on github on your computer: https://github
 From this page ->[**Releases**](https://github.com/DSPBluePrints/FactoryBluePrints/releases)<-, download the latest blueprint package, the file name should be `FactoryBluePrints_X.Y.Z.7z`, please **DO NOT** download from the green Code, that file will not work! over! all!
 3. 解压后，像其他普通的蓝图包一样，放入游戏的默认蓝图文件夹。放进去以后应该是这样：`C:\Users\％用户资料％\Documents\Dyson Sphere Program\Blueprint\FactoryBluePrints\README.md` <br>
 After decompression, put it into the game's default blueprint folder like any other normal blueprint package. After putting it in, it should look like this: `C:\Users\%userprofile%\Documents\Dyson Sphere Program\Blueprint\FactoryBluePrints\README.md`
+4. **第一次使用必须先更新，不然此时没有任何蓝图。**
 
 ### 更新 | Update