College physics experiment teaching is an important educational method for consolidating the basic physics knowledge of students in science and engineering majors, and cultivating their experimental method sand scientific spirit. This paper utilizes Comsol simulation software to conduct a heat transfer simulation experiment involving laser irradiation of fused silica. By varying the power of the incident laser and the spotradius ,the temporal and spatial distribution of the temperature field in the fused silica is analyzed. Through the simulation experiment teaching ,the objective is to enhance sludents’ understanding and knowledge of the healconduction equation in university physics, while also improving their abilities to analyze and design experimental plans ,and use simulation software to solve physical problems.