diff --git a/README.md b/README.md
index 92c909f..f5bb3c5 100644
--- a/README.md
+++ b/README.md
@@ -19,6 +19,7 @@ This is an implementation for Federated Learning Lanczos Graph (FedLG).
     - [CoCrystal](#cocrystal-httpsgithubcomsaoge123ccgnettreemaindata)
   - [Preprocess](#preprocess)
   - [Usage](#usage)
+  - [Bayesian optimization](#bayesian-optimization)
   - [Acknowledgements](#acknowledgements)