Abstract: Class teaching is an essential field in school education.How to improve teaching quality and teaching efficiency is an important issue in the reform of the class teaching.For a long time,effective communication is the key strategy for the implementation of effective teaching,which has drawn much attention of researchers.With referring previous theory,and combining with the present class teaching reform and practice,this paper puts forward a point of view,namely,a teacher who implements “effective feedback and timely communication” in university physics teaching can effectively improve the quality of class teaching.