Abstract: In this paper it takes the Qinshui Basin and Ordos Basin as an example to establish a regression equation between well testing permeability and depth of coal seam by the linearity regression analysis.Using the regression equation,it can be ascertained the variety ranges of the permeability on the location that have not been explored.By comparing the permeability obtained from history matching approach with the one obtained from well testing,and then contraposing a material coalfield,a reasonable scale correlation can be ascertained,multiplied by the predictive permeability of well testing by regression equation,thereby we try to ascertain a relative reality permeability.The permeability can be used in calculating the coalbed methane resources.