Objective　To explore the teaching effect of micro class combined with situational exercise for operating room interns. Methods　A total of 42 interns in the operating room of Mianyang Hospital from May 2019 to February 2020 were divided into the control group taking the traditional teaching mode

while 45 interns from March 2020 to December 2020 in the same operating room were divided into the observation group taking the teaching mode of micro class combined with situational exercise. The examination results (theoretical knowledge and practical operation skills) at the time of graduation were compared

and the ability of clinical case analysis and teaching satisfaction were also comparatively analyzed. T-test and chi-square test were performed by SPSS 24.0 software. Results　The scores of theoretical knowledge and practical operation skills in the observation group at the time of graduation were (90.56±4.27) and (93.48±3.59) points respectively

which were higher than those in the control group (P<0.05). The scores of clinical case analysis ability of the two groups at the time of graduation were higher than those entering the department

and the clinical case analysis ability scores of the observation group [(86.12±6.04) points] were higher than those in the control group [(79.23±5.65) points] at the time of graduation

with statistically significant differences were (P<0.05). The satisfaction of interns with the improvement of self-study ability and enthusiasm

team cooperation ability

clinical practical operation ability

language expression ability

analyzing and solving problem ability

clinical thinking and knowledge point mastery in the observation group was higher than those in the control group

and the differences were statistically significant (P<0.05). Conclusion　In the clinical teaching of the operating room interns

the teaching mode of micro class combined with situational exercise can significantly improve the actual teaching effect and enhance the interns' satisfaction to teaching

which has the value of popularization and application.