Abstract: Comparative method of physics experiments is an extremely important and fundamental research method. In this paper, on basis of in-depth study on comparative method, application examples of comparative method in physics experiments are summarized and wise usage of comparative method and the advantages in the experiment are analyzed in detail. Physical teaching practice shows that full attention to the scientific research methods for solving problems can effectively promote the teaching quality of physics experiment and be beneficial for physics experiment reform, thereby opening up thinking of students and enhancing the ability to design and accomplish experiments independently.