Blended teaching effectively combines the advantages of traditional classroom teaching and online teaching, which is an important breakthrough in the current teaching reform in universities. This paper takes the evidence-based medicine course as an example, analyzes the characteristics of the course and the current situation of teaching, expounds the reasons and necessity of using asynchronous SPOC to carry out the online and offline blended teaching reform, and combines practical experience to demonstrate the implementation steps of the school's evidence-based medicine blended teaching. Including curriculum design, teaching preparation, curriculum implementation and effect evaluation. The survey results show that this teaching mode can make up for the shortcomings of pure offline teaching time, space, learning resources and teaching method innovation, fully mobilize students' enthusiasm for learning by giving full play to students' main position in learning, and effectively improve teaching effect. an effective teaching model.