Objective　To explore the establishment of WeChat teaching platform and evaluate the effect of micro-lectures in obstetrics and gynecology teaching. Methods　A total of 116 trainees (experi-mental group) of 2014 grade and 113 trainees of 2013 grade (control group) were enrolled in the study. The Students' ability of self-learning and collaborative innovation were measured with LASSI and CUCEI scales

and their academic performance was evaluated with using t test. Results　The comparison of the four know-ledge modules showed that the differences in the results of the two knowledge modules

the ectopic pregnancy (P=0.00) and uterine fibroids (P=0.01) between the experimental group and the control group were signifi-cant. Besides

the comparison of students' literacy suggested that the differences in time management (P=0.01)

selection of main points (P=0.04)

innovation (P=0.00) and collaboration capability (P=0.03) between the experimental group and the control group were obviously significant. Conclusions　Micro-lectures-assisted teaching can effectively improve students' academic performance

which has important practical value for improving students' self-learning ability

innovation and collaboration.