Objective　To investigate the effects of micro course in teaching of thoracic surgery. Methods　According to the teaching content of thoracic surgery and the previous teaching experience of the Department of Thoracic Surgery

the micro learning resource base with characteristics was established. We enrolled 20 students of Grade 2014 as the experimental group and 20 students of Grade 2013 as the control group. The micro learning resource base was used for teaching in the experimental group

and the traditional course teaching was carried out in the control group (the teachers were not changed). The teaching effect was evaluated through questionnaires and examinations. Results　The micro learning resource base of thoracic surgery consisted of 11 modules. The learning interest

effect and acceptance in the experimental group were significantly higher than those in the control group (all P<0.05)

and there was no significant difference in understanding ability (P>0.05). Moreover

the experimental group revealed much higher scores in the basic knowledge [(85.3±10.6) vs. (72.5±9.6)] and clinical ability [(87.3±11.5) vs. (75.9±12.2)] than the control group (both P<0.05). Conclusion　It is worth popularizing to establish a micro learning resource base and teaching application model suitable for thoracic surgery

which can help improve students' interest in learning and achieve better learning results through students' targeted and active learning.