The mathematical modeling competition for American college students sponsored by the American Federation of Mathematics and Its Applications is the only international mathematical modeling competition and the most influential competition in the world. The content of the competition involves many fields such as economy, management, environment, resources, ecology, medicine and safety. The competition requires three students (undergraduates) as a group to complete all the work from modeling, solving, verifying and writing the paper within four days, which reflects the ability of the contestants to study problems and solutions and the spirit of teamwork. He is the originator of all kinds of mathematical modeling competitions today.