Abstract: In order to further enhance the underground lump coal separation efficiency for effecting green mining and washing of coal,an investigation is made in the paper into the feasibility of conducting underground lump coal separation using the equipment selected based on the criteria for selection of underground coal separation equipment and the result of analysis of the performance of the equipment used on surface.At the end of the paper,the suggestions are made on the orientation of development of the key equipment for lump coal separation underground.