Mass sports public service supply of Beijing city was mainly investigated in three aspects：policy support，expenditure and supply structure. Research found that the mass sports public service in Beijing run orderly in a good policy environment；Funding supply is still dominated by government and financial investment increased significantly；Sports public service supply of the 6 major systems，although the development of the city is not balanced，but the growth trend is obvious. So Beijing mass sports public service needs to expand the supply of public services，introduce the performance evaluation theory and practical techniques，build a service platform for the whole people，strengthen scientific fitness guidance and services.