A method, operable by a mobile terminal, for monitoring a paging message, comprising: detecting whether the mobile terminal is in a connected state where the mobile terminal is connected with a wireless access device that has access to the Internet; when it is detected that the mobile terminal is in the connected state where the mobile terminal is connected with the wireless access device that has access to the Internet, monitoring the paging message according to a first paging cycle through a Wireless Local Access Network, WLAN; when it is detected that the mobile terminal is not in the connected state where the mobile terminal is connected with the wireless access device that has access to the Internet, monitoring the paging message according to a second paging cycle, wherein the first paging cycle is longer than the second paging cycle that is specified in a mobile communication standard, and a server in a core network transmits the paging message according to the second cycle; after detecting that the mobile terminal is in the connected state where the mobile terminal is connected with the wireless access device, and before monitoring the paging message according to the first paging cycle, the method further comprises: acquiring, by the terminal device, identity information of the mobile terminal and location information of the wireless access device; reporting, by the terminal device, the identity information of the mobile terminal and the location information of the wireless access device to the server; and receiving, after reporting the identity information of the mobile terminal and the location information of the wireless access device to the server, a first message transmitted by the server, wherein the first message comprises information about the first paging cycle according to which the paging message is monitored when the mobile terminal is in the connected state where the mobile terminal is connected with the wireless access device; after monitoring, through the wireless access device, the paging message according to the first paging cycle, the method further comprises: receiving the paging message transmitted by the server through the wireless access device; after monitoring, through a base station, the paging message according to the second paging cycle, the method further comprises: receiving the paging message transmitted by the server through the base station. detecting whether the mobile terminal is in a connected state where the mobile terminal is connected with a wireless access device that has access to the Internet; when it is detected that the mobile terminal is in the connected state where the mobile terminal is connected with the wireless access device that has access to the Internet, monitoring the paging message according to a first paging cycle through a Wireless Local Access Network, WLAN; when it is detected that the mobile terminal is not in the connected state where the mobile terminal is connected with the wireless access device that has access to the Internet, monitoring the paging message according to a second paging cycle, wherein the first paging cycle is longer than the second paging cycle that is specified in a mobile communication standard, and a server in a core network transmits the paging message according to the second cycle; after detecting that the mobile terminal is in the connected state where the mobile terminal is connected with the wireless access device, and before monitoring the paging message according to the first paging cycle, the method further comprises: acquiring, by the terminal device, identity information of the mobile terminal and location information of the wireless access device; reporting, by the terminal device, the identity information of the mobile terminal and the location information of the wireless access device to the server; and receiving, after reporting the identity information of the mobile terminal and the location information of the wireless access device to the server, a first message transmitted by the server, wherein the first message comprises information about the first paging cycle according to which the paging message is monitored when the mobile terminal is in the connected state where the mobile terminal is connected with the wireless access device; after monitoring, through the wireless access device, the paging message according to the first paging cycle, the method further comprises: receiving the paging message transmitted by the server through the wireless access device; after monitoring, through a base station, the paging message according to the second paging cycle, the method further comprises: receiving the paging message transmitted by the server through the base station.