It is quite difficult to perform coalfield seismic exploration in thick-loess covered hill areas because of the loose loess structure, strong absorbency to seismic wave and deep water table in these areas. In Jie-Ping areas, the Shaaxi Geological Research Party for Coal Exploration adopted a series of data acquiring methods and low signal-to-noise ratio data processing technique to solve these problems on the basis of deepgoing researches. The technique has been proved to be effective and can be used in other similar areas.