This paper selects Zhifu District of Yantai City as the study area, takes the traffic community formed by OSM data (road network) as the identification unit of functional areas, constructs the weight model of "influence-space area", and uses POI (point of interest) data and Sentinel-2A image data to identify functional areas. Based on the theory of space syntax, this paper analyzes the spatial accessibility of urban roads through the variables of integration degree and choice degree. The results showed that the northern Zhifu core street space accessibility is higher, with more perfect function types, south street space accessibility is poorer, and function type is relatively single, corresponding improving measures are put forward accordingly.
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