This report introduces the background，objectives，significance and impact of the “double reduction” policy on school sports，and makes suggestions for the future development of school sports based on the background of “double reduction” policy. The introduction of the “double reduction” policy has driven the innovation of school sports policies，highlighted the national and epochal characters of the physical education curriculum，promoted the continuous strengthening of physical education teachers’ self-improvement，increased the daily exercise time of students，and social forces have also participated in school sports work more deeply. However，at the same time，the healthy and sustainable development of school sports in the era of “double reduction” also faces some problems，such as the lack of rich content of sports activities，less professional teachers，not very standard off-campus training institutions，and the lack of close home-school ties，etc. In order to promote the better implementation of the “double reduction” policy，we should make full use of the “reduction” time to let students exercise more actively，have more diverse sports activities，and provide more scientific fitness guidance. In order to make scientific use of the time the policy brings，we should give play to the educational synergy of “home-school-community”，standardize off-campus training，and foster a strong sports culture atmosphere.