In this paper

Rain Classroom is integrated into the teaching design of cardiac surgery

and specific teaching applications are carried out in the clinical medicine general class and international students class. The Rain Classroom is applied in the pre-class preparation

classroom interaction

after-class expansion and teaching evaluation and analysis. The results show that the application of Rain Classroom can significantly improve students' enthusiasm and interaction in class

improve teaching quality and improve students' comprehensive quality

and provide new ideas for cardiac surgery teaching.