The embodiment of the invention discloses a processing method of network communication function abnormity. The method comprises the following steps: determining a first protocol stack currently used by a modem after an application processor receives abnormal indication information sent by the modem, wherein the abnormal indication information indicates that the crash of the first protocol stack causes the abnormity; if the frequency of the abnormity caused by the crash of the first protocol stack is greater than a preset frequency in a preset time, the application processor closing the first protocol stack, and selecting a second protocol stack except the first protocol stack from a plurality of protocol stacks supported by the modem; the application processor opening the second protocol stack, and performing the network registration through the adoption of the second protocol stack; if the network registration is successful, the application processor recording the current position information. The embodiment of the invention further discloses an application processor and a mobile terminal. And the abnormity of the network can be fast detected and recovered through the adoption of the method disclosed by the invention.