The prospecting and development of hot dry rock(HDR),a new type of geothermal resources,are getting more and more important.There are a lot of research achievements on basis geology,hydrogeology,geochemistry and geophysics of Songliao Basin.In this paper,the current situation of prospecting and developing the HDR will be introduced.The way of prospecting HDR will be given.Combined with geology and geophysics data,through the processing of the magnetic and gravity data,the Moho surface and Curie interface will be given.Then we calculate the geothermal change at different depths.Finally we summarize and analyze the characteristics of the gravity and magnetic data and conclude to delineate the areas that possibly have the hot dry rocks.The evaluations of these areas are also given.