Social sports guidance is an important support to realize the strategy of strengthening the country through sports. National fitness is an important part of the construction of a sports power, and social sports guidance is an important force to promote national fitness. Through social sports guidance, people can obtain scientific exercise methods, improve their physical fitness and health level, and lay a solid foundation for building a sports power. The construction of a sports power needs the active participation of social sports guidance. In addition to developing competitive sports, the construction of a sports power also needs to attach importance to the development of mass sports and improve the sports quality of the whole people. Social sports guidance plays an important role in mass sports, which promotes the development of mass sports and contributes to the construction of a sports power by guiding the masses to carry out scientific exercise. Social sports guidance and the construction of a sports power promote each other. On the one hand, social sports guidance can promote the popularization and deepening of national fitness and promote the development of competitive sports; On the other hand, the construction of a sports power can provide better environment and conditions and promote the development of social sports guidance.