Objective　To investigate the online learning situation of students in Chongqing Medical University during the COVID-19 epidemic

analyze the advantages and disadvantages of online learning

and provide reference for the improvement of online teaching. Methods　Random sampling was adopted to conduct online questionnaire survey among undergraduates of Chongqing Medical University in the form of anonymous questionnaire. SPSS 22.0 was used for chi-square test. Results　There were significant differences in learning outcomes between students living in different places during the epidemic period (P<0.05). The results showed that 34% of students thought the advantages of online learning were freedom of learning time

freedom of learning place

abundant resources and available to watch videos repeatedly. According to the analysis of disadvantages of online learning

39% of the students believed that online learning had poor personal self-control ability to ensure learning efficiency

no sense of reality in the experimental courses

lack of learning atmosphere

decrease of the learning motivation

tedious learning process

requiring constant software upgrading and replacement. Conclusion　Firstly

for special periods

we should unify online learning platforms in the whole university. Then

we should strengthen the publicity of online courses. Finally

teachers should drive the classroom atmosphere during the online teaching and improve students' learning efficiency.