The electric power is the modernized life cornerstone, is the economical development power. In recent years but as a result of the energy shortage, the fuel price anabatic wind rose, the peak load continued to grow, creates the electric power supply becoming serious. If the power supply cost is unable to respond in the electrovalence, how also creates the enterprise own to continue forever the management. This research main goal thoroughly is analyzing the Taiwan Telegraphic Transmission electrovalence structural model and the set price law, and the electrovalence difference¡£season electrovalence, the time electrovalence¡¤rationality, and on the external environment, faces the fuel price anabatic wind to rise and under the unreasonable low price electrovalence arduous situation, then discusses it in accordance to it road¡FFinally will attempt summarizes in accordance to the future transport business environment, the formulation electrovalence adjustment mechanism, will conform to present situation, will be full responded each kind of factor in the electrovalence, hoped for this research will be able to become the future to establish in the electrovalence model formulation process the reference. This study research for the document company, after the process material analysis, will establish "the most suitable electrovalence set price pattern" the factor induction to be as follows¡G (1) Brings into line with "the fuel cost". (2) To consider "the reserve capacity rate". (3) Enhancement breaks a contract the penal regulations. (4) To enhance the time electrovalence section several. (5) Change unreasonable electrovalence structure. (6) Reference various countries electrovalence model.