Objective　To explore how to carry out endoscopic skill training in undergraduate medical education and evaluate the teaching effect of modular skill training using endoscopic simulator. Methods　After completing the basic teaching content of the surgical practice course

we added the learning course of the basic theory and basic operation of endoscopy to the students of Clinical Medicine Department from Nantong University. In the experimental group

292 students were trained by the modular training using the endoscopic simulator. The control group consisted of 114 students

who were treated with ordinary video teaching and instrument operation exercises. After the same class hours of training

the two groups of students were evaluated with intermittent suture and knotting under endoscope as the skill assessment criteria. The chi-square test was performed using SPSS 19.0. Results　The excellent rate and qualified rate of the medical students after the modular training of the endoscopic simulator were 7.5% and 42.8% respectively

which were significantly higher than 0% and 11.4% of the control group

while the unqualified rate of the experimental group was 49.7%

which was also lower than 88.6% of the control group

with significant differences (P<0.01). Conclusion　Modular training using endoscopic simulator helps the medical undergraduates to quickly increase the ability of endoscopic operation. And in the stage of undergraduate

medical education implementation of the training can shorten the learning curve of endoscopic skills for medical students after they enter clinical practice.