Abstract: The microclimatic conditions surrounding street greenbelt in a business zone of Shenzhen were simulated using an urban microclimate soft-ENVI (ENvironment for Visualizing Image)-met.The accuracy of simulating results was validated using the field measured data.It shows that the ENVI-met model can accurately describe the characteristics of microclimate spatial distribution and diurnal variation in the study area.The microclimate effects of three landscape types,i.e.tree,lawn,and waterscape,are compared using the ENVI-met model.By comparing air temperature and humidity,it indicates that the cooling and humidification effects are different among these street types.The tree greenbelt is the best,followed by lawn,and waterscape.However,the characteristics of daily variation and spatial distribution of cooling and humidification effects for them are consistent.Compared with land surface temperature,it demonstrates that there is a heating effect in the tree and lawn street greenbelts on the adjacent pavement.In contrast,the waterscape street greenbelt plays a cooling effect on the surface of surrounding pavements.These results provide valuable information for designing climatic adaptability plans on the urban street greenbelt.