The method of the mobile terminal Wcdma power calibration and calibration system

The invention discloses a method and a system for calibrating the power of a wideband code division multiple access (WCDMA) mobile terminal. The method comprises the following steps of: A, controlling the mobile terminal to enter a calibration mode by using a computer; B, controlling the mobile terminal to enter a first operating frequency range by using the computer; C, controlling a base station simulator to enter a testing mode by using the computer; D, simultaneously setting the radio frequency signal line loss of a plurality of frequency ranges of the mobile terminal; E, causing the mobile terminal to enter a middle channel, causing a radio frequency amplifier to sequentially enter a high gain mode, a middle gain mode and a low gain mode, and scanning the output power of the mobile terminal and power at an antenna port of the mobile terminal; F, calibrating difference values of the output power of the mobile terminal in other channels and the middle channel in the first operating frequency range; G, calibrating power detection circuits of the middle channel and the other channels at the maximum transmission power of the mobile terminal, and reading the difference values; and H, modifying an operating frequency range, and repeating steps B to G until the calibration of all the operating frequency ranges supported by the mobile terminal is finished.