diff --git a/README.md b/README.md
index 22158eed0f45a429cd872ecb6637c17f6c072150..344bdd8daef0215e4581ce4b01a6c350624ee8a2 100644
--- a/README.md
+++ b/README.md
@@ -1,3 +1,14 @@
-# CSST
+## CSST
 
 CSST pipeline.
+
+
+## install
+```
+pip install -U git+git://github.com/hypergravity/laspec
+```
+
+
+## doc
+
+[ https://laspec.readthedocs.io/en/latest/]( https://laspec.readthedocs.io/en/latest/)
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