We aim to assess the effectiveness of integrating follow shot video of real cases into Case Based Learning (CBL) during general surgery clerkship. Materials and methods: For representative cases, we took the follow shot of all the process from patient's admission to discharge. 76 students were randomly divided into experimental group and control group. Experimental group took CBL with follow shot video and control group took CBL only. After the teaching session, students filled designed

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... naire. Results: Compared with the control group, experimental group show improved interest, faster reception of the theories, improved clinical thinking and analysis abilities, better doctor-patient communication, etc. Conclusion: Follow shot video brings advantages to CBL and improves its effectiveness. Follow shot video is recommended to clinical clerkship.