In order to clarify the gas production path of coalbed methane in the process of drainage，samples that collected from No.3 coal seam of Mabidong Block，southern Qinshui Basin are studied，and the parallel and series experiments composed of fractured and matrix samples are designed to simulate the different combination mode of matrix and fractures. By analyzing the relationship between gas flow rate，core permeability and displacement pressure difference in each case，the mechanism of coalbed methane production at different driving pressure differences is explored. The experimental results show that the coalbed methane follows the series path from the matrix pores to the natural micro-fractures and then to the artificial fractures during the drainage process，and it also follows a parallel path that composed of the matrix，natural micro-fractures and artificial fractures. The production of gas in the series path is mainly affected by the permeability of the matrix，and the production of gas in the parallel path is mainly affected by the artificial fractures. The equivalent permeability of the series path is much lower than that of the parallel path. When the pressure difference across the core is reduced from about 4.5 MPa to 2 MPa，the equivalent permeability of the parallel path is reduced from 30 times to 16 times the equivalent permeability of the series path. Therefore，in the process of drainage of coalbed methane wells，the influence of the parallel path on the production of coalbed methane should be further considered.