Aaron Clauset et al. used the Maximum Likelihood Estimate Method and Kolmogorov-Smirnov Statistics to fit the Power-Law distributions' αand xmin values, which is the latest development in complex network fields.  On the basis of the method, several degree distributions of networks, including GuangZhou software industry, FoShan Ceramics industry, Chinese household appliances industry and Baidu Cyclopedia lemmas industry, were studied.  The results were compared with the previous ones,  Some  conclusions are obtained.