In this article the flipped classroom teaching mode is focused. Teaching design is carried out with combining with three-stage teaching method and revolving pre class learning, in class discussion, and post class expansion. It deeply explores the design ideas of online content for pre class learning and the way it connects with the physical classroom. Integrating ideological and political elements into the curriculum through traditional culture, life cases, and hot events, makes abstract physical concepts more vivid, intuitive, and practical. With this plan, the class title rate, student participation, and the rate of correct answers to questions have been greatly improved, Through a survey questionnaire, the feasibility of teaching models, teaching methods, and content feasibility are investigated to assess student recognition. It is found that student recognition is extremely high, and this plan has certain reference value for improving teaching quality.