Based on the practical situation of Guantai mine,this research used numerical simulation method to analyze and studied the coal roadway with bolt-mesh-anchor support.The transforming rule of roadway under different support parameters was gained.The results show that the high level stress is the main factor to intensify roadway to deformation,which not only verifies reasonability of support parameters,but also predicts support effect.Therefore,theory evidence will be provided for optimizing support parameters.