Over the years, Taiwan's overall population structure has undergone significant changes, the impact of declining birthrate phenomenon i s the development of education in Taiwan. Therefore, to explore and study the impact of the phenomenon of low birth rate, with considerable urgency and importance. Quasi, the present study is to investigate the phenomenon of low birth rate for school -age population, and therefore affect the development of school sport and to prepare response strategies. This study analyzes the format ion due to low birthrate, declining birthrate explore the impact of sports for school and find a method to solve the problem, let 's declining birthrate impact to a minimum.