To investigate the influence of Songhua River on Harbin and its surrounding areas during summer and winter and present a theoretical support for correct utilization and optimization of the urban river,a ground data collecting approach combined with remote sensing data collecting is used to analyze the remote sensing images of January 25 and June 1 in 2004.This method based on the reach of Songhua River confirms the impact of Songhua River Basin on its adjacent areas according to the distributions of temperature and moisture in summer and winter.The results reveal that in summer the temperature inside the city is abnormally higher than that in the suburb area and there is a tendency of surface temperature increase from water area to both banks,moreover,that in the northern side is more manifest than that in the southern facet.While the suburb humidity value is comparatively low and the distribution of relative humidity is centered as the Songhua River and its adjacent areas,meanwhile,the influenced radius of northern bank is larger.In winter,the temperature inside the city is approximately 4 ℃ higher than that in the suburb area and the distribution of temperature along either side of Songhua River differs a lot.The surface temperature of the frozen river resembles that of southern bank,while it is 2 ℃ higher than that of northern bank.With urban humidity about 1% lower than that in the suburb,it is reasonable that the distribution of humidity of Harbin accords with the dry island effect in winter.This study lays a data base and a technical support for the pointing observation and moving measurement in the future.