The invention provides a network connection method and a mobile terminal, and relates to the technical field of communication. The method comprises the following steps: acquiring position informationand state information of the mobile terminal; determining a first shielding condition corresponding to the position information; when the state information satisfies a first shielding condition, determining that the mobile terminal is in a shielding environment; and when it is detected that the mobile terminal leaves the shielding environment, connecting the mobile terminal to the mobile network with the transmission rate larger than or equal to the preset transmission rate. In the present invention, different position information can correspond to different shielding conditions; when the state information of the mobile terminal meets a first shielding condition corresponding to the current position information; the shielding environment corresponding to the position information at presentcan be determined, and the mobile terminal can be immediately connected to the high-speed mobile network after leaving the shielding environment, so that the mobile terminal is prevented from stayingin the low-speed mobile network for a long time after leaving the shielding environment, and the communication service processing efficiency of the mobile terminal is improved.