The characteristics of physics show its superior ability to educate people. However, for a long time, there are some problems in college physics teaching in China, such as backward teaching ideas, outdated teaching methods and single teaching mode, which lead to some students' low interest in physics learning. The mixed teaching mode is the product of the development of the information age. The mixed teaching mode is used to meet the individual needs of students for learning. The teaching method follows the student-centered and teacher-led method, making students the masters of learning. Based on this, this paper summarizes the meaning and characteristics of mixed teaching, focuses on exploring the application of online and offline mixed mode in college physics teaching, and summarizes the application effects of many teaching methods from four aspects: preview before class, study in class, and review after class and subject evaluation.