diff --git a/README.md b/README.md
index 73de8093cbf8e17f57d963a8a7439e5f7d4a60ed..4946e823d2b5d28d70f84ff8813da437b267bc6e 100644
--- a/README.md
+++ b/README.md
@@ -36,13 +36,6 @@ $ ./run.sh Examples/options/helloalg.py
 
 * Service: Common Service
 
-## Full Chain
-
-Detector simulation: 
-```
-$ ./run gaudirun.py '$EXAMPLESROOT/options/tut_detsim.py'
-```
-
 ## Conventions for collections
 Keep the collection names compatible between the prototype and the existing CEPC software.