China’s entering the WTO brings a grim and practical challenge to our communication industry. According to the corresponding rules

China communication industry should begin to open the communication service market to overseas in china’s first year in WTO. In the next four years

China should complete the procedure of building a fair-play market to the carriers of both domestic and overseas.In order to connect with international convention and keep up with the top-grade communication companies

we need learn and set up a series of guidelines that are widely used in these companies. The article below will make a deep analysis on some new concepts that are applied by China communication corporations ARPU and "accumulative average number of users". Some examples and practical considerations are also presented in this paper.