The present invention discloses a method for a mobile communication terminal and belongs to the internal communication field of the mobile terminal. A control signal path between an application processing module and a baseband processing module is composed of a first signal path, a second signal path and a feedback path. The application processing module transmits a first request signal to the baseband processing module via the first signal path and receives a feedback signal transmitted from the baseband processing module via the feedback path. The application processing module receives the feedback signal and then transmits data to the baseband processing module. The baseband processing module transmits a second request signal to the application processing module and then transmits data to the application processing module. The internal communication method for the mobile terminal has following beneficial effects: hardware resources are saved; power consumption of a system is reduced; a communication connection process is shortened; speed of data transmission is increased; a data retransmission mechanism is additionally arranged; and safety and reliability of the data transmission are ensured.