Objective　To explore the application effect of the Rain Classroom on the clinical training of children's diabetes mellitus ketoacidosis (DKA) for the standardized residency training. Methods A total of 148 residents in the department of pediatric endocrinology in Shengjing Hospital of China Medical University from January 1st

2016 to December 31st

2019 were randomly divided into two groups: the control group (n=74) and the experimental group (n=74). The experimental group was taught by Rain Classroom

and the control group was taught by traditional teaching method. The theory test and questionnaire survey were accomplished in the two groups to evaluate the teaching effect. SPSS 17.0 was performed for t test. Results　Compared with the control group

the Rain Classroom significantly improved the test scores [(9.6±0.6) points vs. (7.6 ± 1.3) points

P < 0.05]. The students in the experimental group improved the evaluation of teaching effect. In the experimental group

82.4% residents liked the Rain Classroom. Conclusion　The application of the Rain Classroom in the clinical training of children's DKA for standardized residency training has achieved positive results.