A method for reducing power consumption of a mobile terminal, comprising: in a screen-off state, acquiring (110, 301, 401) a fingerprint detected by a fingerprint recognition module; matching the detected fingerprint with an unlocking fingerprint set in advance; if the matching fails, controlling (120, 304, 407) a touch chip to output a touch sensing control signal to a touch display screen, wherein the touch sensing control signal is configured to enable the touch display screen to enter a working mode for detecting blank screen gestures; according to the detected fingerprint, matching an application program on which a user having the detected fingerprint has an operation right, and acquiring a set of blank screen gestures corresponding to the application program; reporting a blank screen gesture event to an application layer upon detection of a blank screen gesture belonging to the set of blank screen gestures to execute an operation corresponding to the blank screen gesture; and characterized in that: before controlling (120, 304, 407) a touch chip to output a touch sensing control signal to a touch display screen, the method further comprises: activating a camera to acquire biological characteristic information of the user, and matching the biological characteristic information with a preset information template; and according to the matching result, determining whether to control the touch chip to output the touch sensing control signal to the touch display screen; wherein, the biological characteristic information includes face characteristic information, and the method further comprises: when detecting a fingerprint input, if face characteristic information is detected by the camera, determining that this fingerprint input is not a wrong operation, and controlling the touch chip to output the touch sensing control signal to the touch display screen. in a screen-off state, acquiring (110, 301, 401) a fingerprint detected by a fingerprint recognition module; matching the detected fingerprint with an unlocking fingerprint set in advance; if the matching fails, controlling (120, 304, 407) a touch chip to output a touch sensing control signal to a touch display screen, wherein the touch sensing control signal is configured to enable the touch display screen to enter a working mode for detecting blank screen gestures; according to the detected fingerprint, matching an application program on which a user having the detected fingerprint has an operation right, and acquiring a set of blank screen gestures corresponding to the application program; reporting a blank screen gesture event to an application layer upon detection of a blank screen gesture belonging to the set of blank screen gestures to execute an operation corresponding to the blank screen gesture; and characterized in that: before controlling (120, 304, 407) a touch chip to output a touch sensing control signal to a touch display screen, the method further comprises: activating a camera to acquire biological characteristic information of the user, and matching the biological characteristic information with a preset information template; and according to the matching result, determining whether to control the touch chip to output the touch sensing control signal to the touch display screen; wherein, the biological characteristic information includes face characteristic information, and the method further comprises: when detecting a fingerprint input, if face characteristic information is detected by the camera, determining that this fingerprint input is not a wrong operation, and controlling the touch chip to output the touch sensing control signal to the touch display screen. before controlling (120, 304, 407) a touch chip to output a touch sensing control signal to a touch display screen, the method further comprises: activating a camera to acquire biological characteristic information of the user, and matching the biological characteristic information with a preset information template; and according to the matching result, determining whether to control the touch chip to output the touch sensing control signal to the touch display screen; wherein, the biological characteristic information includes face characteristic information, and the method further comprises: when detecting a fingerprint input, if face characteristic information is detected by the camera, determining that this fingerprint input is not a wrong operation, and controlling the touch chip to output the touch sensing control signal to the touch display screen.