Abstract: in order to ensure safety mining in deep coal minesthe curen status of deep mining and disasters type were analyzed to mining depth over 800 m of deep coalmines in China, and the number ofdeep mines and capacty itorbution were given.The authors analyzed the geological mechanics factors( high ground stresshigh ground temperature,high water pressure high gas content and low coal ock permeabilty) and mining intensit factors aff cting dep mine disasters. Meanwile,thenational major deep mine disasters properties were clasired. conbined with recent five years of dep mine disaster acidents.it vas concuded thathegas disaster was the first major calanitycomplex disasters were the new characteristias of deep mine the degree of complex disastrs was larer than simple disasters Atlast.the deep coal mine disasters prevention and control tachnology and equipments were evaluate . Acording to the major dfi:utits and issues of deep mining faced some feasible suggestions were put forward.