Abstract: Objective To creat a new set of morphology experimental teaching materials of human cardiac conduction system. Evaluate its application in practice. Methods The experimental subject was 120 students from medical undergraduate of 5-year programof clinical medicine and medical imaging major in a medical college, among which 60 students from 1 class of clinical medicine and 1 class of medical imaging were selected as the experimental group. The control group consists of 60 students from the same professional parallel classes. In the teaching of the cardiac conduction system, the experimental group was used new teaching materials, and the controls was used traditional teaching materials. Then the results of two groups of students' examination were compared to find potential benefits from use of new teaching materials. Results There were no statistically significant difference between the total scores of examinations from the two major in the control group and in the experimental group (all P>0.05), so the two major in same group could be studied together. The scores of real-time and 4-week examinations after class in the experimental group were all significantly higher than that of the control group. The scores of real-time examination in experimental group and control group were correspondingly less than the scores of 4-week examination after class in them (P<0.05). However, this difference in experimental group was more significant than that in control group. Conclusions The new teaching materials can promote medical students' learning of cardiac conduction system.

Key words: Medical morphology, Cardiac conduction system, Experimental teaching, Application