At present, such methods as output estimation, economic evaluation and comparison of fracture parameters are usually used for fracturing effect analysis and such method is used more widely that various mathematical models and test data are applied to calculate geometric parameters of fractures. It is confirmed that production increase effect is obvious after coalbed methane wells are fractured. Applied are the fracturing operation curves to collect parameters needed in mathematical mode calculation, calculated are geometric parameters of fractures (fracture length and width), optimized is the fracturing design parameters, established is a sample and feasible calculation method of fracture parameters and the established improvement model can increase the accuracy of the calculated fracture length and width values. In combination with geological factors, analyzed is effect of fracturing construction factors on fracturing fracture parameters and it is considered that construction parameters is positive correlation with fracturing parameters in general cases and the correlation is not obvious when a certain degree is reached.