A terminal power control method includes following steps according to the quality of received signal, the terminal obtains quality parameter of received signal, received power of terminal occupying channel, and all the channel power in present cell which have the same carrier frequency and time slot with terminal occupying channel respectively; according to all the channel power in present cell which have the same carrier frequency and time slot with terminal occupying channel, determines the allowable received power minimum of terminal occupying channel; according to the allowable received power minimum of terminal occupying channel, received power of said terminal occupying channel and said received signal quality parameters, generates power control command. Present invention could control powers of signals in different channels, increase the demodulation performance of terminal and the stability of wireless link, and assure the quality of system communication.