Abstract: Abstract: The sustainable development of urbanization needs to focus on the citizen of the city. In this context, it is important to evaluate the spatial distribution of urban park system. Based on the reference of domestic and foreign literature, this paper classified the system of Nansha District City Park in Guangzhou. Based on POI data, we use kernel density estimation method, the nearest distance method, standard deviation ellipse method, Euclidean distance method and other GIS spatial analysis method. Combined with the theory of space syntax, we start from three aspects: the spatial arrangement of urban park system, the morphology of urban road network, the impact of the spatial arrangement of urban park system, which caused by urban road network. This paper draw the following conclusions: ①The urban park system has a multicenter distribution in this area, and the distribution direction is northwest-southeast. The distribution patterns of different types of parks are different, the city park have two distribution cores and relatively dispersed, and the nature park have three distribution cores and they are concentrated. ②The characteristics of urban road network on the overall scale and local scale have great similarity, showing three high value integrations. As a whole, Nansha road network is more dependent on the highway and other urban commuter system. ③Park space layout depends on the road network both on overall scale and local scale. The spatial distribution of the urban park is high affected by the network form, and the spatial distribution of the nature park is little affected by the network form. This study provides a reference for the park system space planning, which is contribute to the reasonable allocation of urban park system.