Objective　To analyze the interactions in lectures conducted by young teachers in medical institutions and investigate the way of improving their ability. Methods　We analyzed the teaching plans and the actual performance of 31 teachers who enter the final of the 16th competition of young teacher's basic skills， 2011 and observed the lectures of another 15 randomly selected teach-ers， focusing on the interactions and the effects in the lectures. Results　Among the 31 teachers， 19（which is 61.29% of the total） teachers designed and implemented interactive teaching； 6（which is 40.00% of the total） teachers adopted interactive teaching in daily teaching. Among the 40 young teachers included in the research， 27（which is 54.35% of the total） teachers employ interactive teaching. The way of performing interactive teaching in all above situations is answering questions. Conclusions　Interactive teaching is commonly used in lectures by young teachers in medical insti-tutions. However， the method is simple and the quality needs to be improved.