Telecommunications fraud is accompanied by the development of network communications. The telecommunications fraud in the capital has the features of higher incidence，greater harm and more types. Detective work is facing many difficulties due to the high degree of organization. In the judicial application，judges need to determine joint crimes range，principal and accessory，consummation and attempted standard，reasonable amount of crime. In order to prevent telecommunications fraud of Capital Region，it should plug the loopholes in the system，strengthen coordination among the departments，improve technical investigation level，close international cooperation and intensify propaganda.