diff --git a/README.md b/README.md
index 2bfb4a2..d470eb9 100644
--- a/README.md
+++ b/README.md
@@ -18,6 +18,9 @@
 ## Class Diagram (비즈니스 관점)
 <img width="554" alt="image" src="https://github.com/user-attachments/assets/32789ee0-7958-46dc-90b7-a3c3c1a0e95f">
 
+## Activity Diagram (비즈니스 관점)
+<img width="839" alt="image" src="https://github.com/user-attachments/assets/fcced1e1-1645-4a87-b679-7865ecea4d71">
+
 ## ERD (코드 관점)
 <img width="779" alt="image" src="https://github.com/user-attachments/assets/7e413630-c062-458c-92ff-178c684f97c3">