In order to improve the pertinency and effectiveness of coal mine safety management and based on the Fault Tree Analysis and Fuzzy Theory,the classification method of fully mechanized mining face hazards is proposed by using risk assessment,the criterion related with evaluation score T is as follows:The area is dangerous when T≥88,while the area is threatening when 55≤T<88,and the area is relatively safe when T<55.This criterion was applied to the mechanized mining face No.3212 in Qianyingzi Coal Mine.The results show that mining face No.3212 is a threatening area,where the most probable accident is rock burst whose probability range is(0.29,0.73),and the least probable accident is coal-dust explosion whose probability range is(4.08×10-11,4.32×10-11).Thus,in process of safe government,the management of rock burst should be strengthened to improve the effectiveness.