Based on high support cost of anchor mesh belt, anchor cable joint, unreasonable design density and low mining rate of recovery roadway in 3304 working face of Dongtan Mine, support parameters were correspondingly re-designed and calculated, the new support parameters were made, combined with numerical simulation and field industrial test, the result showed that the reasonable anchor net supporting parameters reduced 18% support cost, with obvious mining rate advancement, good control of roadway deformation, the reasonability, economy and safety of support parameters were made.