Based on the principle of lightning location systems and analysis method of error, comparison was made that the locating errors of lightning detecting net in different component ways by using the software including functions as selecting automatically stations and calculation. The results show that the locating accuracy is related with the number of substations and geometrical shape and the distance between substations as well as the algorithm used besides the azimuth error and time error.In addition,a new strategy was put forward and adopted, that is,one substation serves more dominant stations and the several substations cross combined among them still serve different dominant stations,respectively. The technology of designing network of lightning location is studied according to conditions of Hubei Province.