diff --git a/README.md b/README.md
index 77abab3..df4c17d 100644
--- a/README.md
+++ b/README.md
@@ -6,10 +6,18 @@
 
 
 ## Setup
-1. Create **env.txt** file in main project at root directory.
+1. Please set up before using this library
+``swift
+        LC.initSet([
+            "NOTION_API_KEY":"xx",
+            "NOTION_ROOT_NODE_ID":"xx",
+            "OPENAI_API_KEY":"xx",
+            "OPENAI_API_BASE":"xx",
+        ])
+``
 2. Set some var like OPENAI_API_KEY or OPENAI_API_BASE
 
-Like this.
+Such as.
 
 ```
 OPENAI_API_KEY=sk-xxx