Objective　To investigate the value and effectiveness of the case-based learning assisted by several internet platforms for medical interns in interactive teaching for undergraduate students in the clerkship of cardiovascular surgery. Methods　Ninety-six undergraduates were randomly divided into control group (n = 48) and experiment group (n = 48). The control group received traditional teaching

and the experiment group received case-based learning with the aid of WeChat and Sojump questionnaires. The theoretical and clinic operating scores

classroom atmosphere

learning interest

learning efficiency

learning ability improvement

theoretical knowledge mastery and clinical skills improvement were were compared between the two groups. SPSS 19.0 was used for t test and chi-square test. Results　The clinic operating scores

classroom atmosphere

learning interest

learning efficiency

learning ability improvement

theoretical knowledge mastery and clinical skills improvement were statistically higher in experiment group than in control group (P < 0.05). Conclusion　The application of case-based learning combined with internet platforms has achieved a good teaching effect in interactive teaching for undergraduate students in the clerkship of cardiovascular surgery and is worthy of popularizing.