Noise monitoring department usually accumulates a great number of data information in daily work.The development of noise mapping also provides abundant simulated or measured noise data.However,these data resources haven't been made a good use.The spatial analysis,as the core of GIS(Geography Information System),is a good tool or approach to better use these data.Spatial analysis is to understand the spatial dependence and spatial association of some data related to geographic locations,and to establish the statistical relation among the data according to the spatial locations.This paper analyzed the noise date distribution of Guangzhou central area by GIS spatial analysis software Geoda.The methods of"box-whisker plot"and"color choropleth map"were used to analyze the environment noise in this area,and it is convenient to identify noise"hotspots"and to assess the quality of urban sound environment.It showed that the spatial analysis could offer some references for urban layout,transportation planning and environmental noise policy making.