Abstract: The algorithms are ubiquitous in nature and human society, and the algorithms in national sports are the internal mechanisms of the generation and development of national sports.Algorithms from nature, society and culture act on national sports and become an external driving force for their development.Different national sports use physical behavior as a carrier, including physical entertainment, social interaction and life shaping.The algorithm should be used to plan and predict the development of national sports, clarify the national sports structure, stabilize the foundation, and formulate the national sports promotion strategy.