Abstract: The paper discusses scientific properties of the mining method of caving top coal with light hydraulic support for sublevel caving between steeply inclined near coal seams.The application of new mining method is benefic to avoiding mutual effect between steeply inclined near coal seams,improving production ability and recovery,forming canonical ventilation system.By detailed illustration on the adaptability of hydraulic support and the uniqueness of new mining method,we can educe the new mining method and hydraulic support can guarantee work safety,be benefic to good production and good benefit,and adapt to caving process of top coal after using united caving,surrounding strata broken and emerging mine pressure.Meanwhile,the paper gives sound advice for improving on mining method and yielding system of working face.