Method for correcting IQ imbalance of terminal

The invention provides a method for correcting IQ imbalance of a terminal. The method includes the following steps: (1) adopting an auxiliary correcting device to receive a specific correcting signal sent by the terminal or send the specific correcting signal to the terminal, wherein the IQ imbalance does not exist in sending and receiving of the auxiliary correcting device; (2) calculating the IQ imbalance correcting coefficient of sending or receiving of the terminal according to the signal received by a receiver, and (3) when the terminal normally works, carrying out correcting compensation according to the IQ imbalance correcting coefficient. According to the method, the IQ imbalance is corrected, meanwhile, the processing procedures of the terminal are simplified, and cost is saved.