As an important part of urban public space， community public sports service space is the primary place for people to keep fit. Public sports space with high quality can effectively improve the life quality of people. At present， the public sports service space in China is still at the stage of "reconstruction， establishment and neglect of management". The lack of consideration on the use of venues and the satisfaction of residents in planning and construction has led to unscientific allocation of public sports service space， low efficiency of utilization and low level of service， which has affected the development of national fitness. In addition， the old public sports service space in the old city has been unable to effectively meet the high-quality fitness needs of people with the increasing number of residents in the old city and the aging of public sports service facilities. Therefore， it is particularly important to optimize the layout of new and reconstructed public sports service facilities. Jinniu District， Chengdu City was used to conduct empirical studies. POI （roint of interest） for data collection was collected. The accessibility of large public sports facilities was analyzed with ArcGIS road network analysis method. Gini coefficient and Lorenz curve were used to analyze the fairness of the spatial layout of public sports service. The results showed that there were some problems including insufficient scale of public sports service space， low accessibility from residential areas to public sports facilities， and mismatch between the distribution of population and the layout of public sports space in Jinniu District. It is proposed to increase the supply of public sports facilities， improve the transportation conditions from public sports facilities to residential areas， and improve the coverage of public sports space in populous streets to solve the difficulties in fitness and bad experience of fitness in old communities， and promote the development of national fitness with high-quality.