The intermediate chapter of the king of mathematical experiments covers complex mathematical concepts, formulas and algorithms by providing mathematical experiments with moderate difficulty. The experiment requires students to analyze and answer questions and draw conclusions, consolidate basic mathematics knowledge and improve their ability to analyze and solve problems. The second chapter introduces the basic methods of mathematical modeling. Students build mathematical models by analyzing and solving problems. It is beneficial to cultivate students' mathematical modeling ability and practical application ability. Basic knowledge and modeling ability, mathematics experiment intermediate chapter Wang teaches mathematics problem-solving skills to help students understand problems and improve problem-solving efficiency and quality. The intermediate chapter of mathematics experiment king provides practical cases and problems, and students use mathematics knowledge and skills to solve them. The application fields cover physics, engineering, economics and so on. Through practical application training, cultivate the ability to solve problems in practice.