Application of horizontal well staged fracturing in coalbed methane exploition is a new means for increasing single well production and design of artificial fracture parameters is one of important factors affecting coalbed methane production. Adopted is numerical simulation to analyze number, lengths and spacing of various fractures in middle blocks of the east wing in Qinshui depression after fracturing and research effects of these fractures and their flow conductivity on CBM horizontal well productivity and utilized is 0rthogonal test method to quantitatively study effects of various fracture parameters on fracturing horizontal well productivity and then determine the optimal combination of CBM horizontal well fracturing fracture parameters in the concerned area, which will provide valuable reference for CBM horizontal well fracturing optimization design still in the initial stage. Study results show that the fracturing effects and economic benefits are optimal in the case of 2 or 3 fracturs,130-160m long each and 400-600m spacing between each other and 15-25 um² • cm of diverting capacity.