The main reason for the low influence of football in the United States is that the three major professional leagues in North America: professional basketball, professional ice hockey and professional baseball have a long history, a high degree of professionalism and mature commercial operation, which have long been deeply rooted in the hearts of the people in the United States. Therefore, as a latecomer, football can only take the curve of the "national fitness route" in the United States to save the country. However, there are millions of children engaged in football in the United States, and this huge mass base has left enough imagination space for the future of American football.