The design of ideological and political education in physics experimental courses integrates ideological and political content into the teaching process of professional physics knowledge through the teaching content, teaching methods, and ways of thinking of the experimental courses, to implement the fundamental task of moral education. This paper takes the experiment of LED photoelectric heat measurement method research and performance analysis as an example, deeply explores the ideological and political elements contained in the experiment, and elaborates on the content, integration methods, and educational methods of the ideological and political construction of design-based physics experimental courses from aspects such as technological self-reliance and strength, cultivation of young scientific and technological reserve talents, and dialectical materialism. It embeds value guidance in the imparting of knowledge and the cultivation of abilities, and helping students shape correct worldviews, outlooks on life, and values.