On the basis of the observed data obtained from the 16 ground surface movement surveying stations,and fully considering some conditions on geology and mining,the 10 controlling factors of coal mining subsidence were determined.Then these 10 controlling factors were ordered on their contribution to mining subsidence by gray incidence analysis,and were analyzed by stepwise regression analysis.The general conclusion is that the main controlling factors of mining subsidence in Tongchuan mining area are perturbation coefficient,integrated hardness of overburden strata,thickness of surface soil,width of working face and mining thickness in turn.