A method for controlling turn-on and turn-off of a wireless local area network, the method comprising: acquiring (202, 301) an operating parameter of the wireless network provided by a wireless access device; determining (204, 302) whether the operating parameter satisfies a predetermined switching condition; and controlling (206, 303) the wireless access device to turn on or turn off the wireless network if it is determined that the operating parameter satisfies the predetermined switching condition; wherein determining whether the operating parameter satisfies the predetermined switching condition comprises: determining whether a current running time length of the wireless network reaches a predefined turn-off time length, if the operating parameter is the current running time length; determining whether a current turn-off time length of the wireless network reaches a predefined turn-on time length, if the operating parameter is the current turn-off time length; determining whether a current running time of the wireless network is the same as a predefined turn-off time, if the operating parameter is the current running time; determining whether a current turn-off time of the wireless network is the same as a predefined turn-on time, if the operating parameter is the current turn-off time; determining whether a total data flow rate value of the wireless network within a predetermined time period reaches a data flow rate turn-off threshold value, if the operating parameter is the total data flow rate value; determining whether a total power consumption value of the wireless network within a predetermined time period reaches a power consumption turn-off threshold value, if the operating parameter is the total power consumption value; and determining whether an instantaneous data flow rate value of the wireless network within a predetermined time period is continuously smaller than an instantaneous turn-off threshold value, if the operating parameter is the instantaneous data flow rate value; characterised in that the method is performed by a mobile terminal that can directly communicate with the wireless access device via the wireless network when the wireless network is turned on, and can communicate with the wireless access device via a different network when the wireless network is turned off, and: acquiring the operating parameter of the wireless network provided by the wireless access device comprises receiving the operating parameter of the wireless network sent by the wireless access device; and controlling the wireless access device to turn on or turn off the wireless network comprises sending a turn-on or turn-off command to the wireless access device, the turn-on command being configured to trigger the wireless access device to turn on the wireless network, and the turn-off command being configured to trigger the wireless access device to turn off the wireless network. acquiring (202, 301) an operating parameter of the wireless network provided by a wireless access device; determining (204, 302) whether the operating parameter satisfies a predetermined switching condition; and controlling (206, 303) the wireless access device to turn on or turn off the wireless network if it is determined that the operating parameter satisfies the predetermined switching condition; determining whether a current running time length of the wireless network reaches a predefined turn-off time length, if the operating parameter is the current running time length; determining whether a current turn-off time length of the wireless network reaches a predefined turn-on time length, if the operating parameter is the current turn-off time length; determining whether a current running time of the wireless network is the same as a predefined turn-off time, if the operating parameter is the current running time; determining whether a current turn-off time of the wireless network is the same as a predefined turn-on time, if the operating parameter is the current turn-off time; determining whether a total data flow rate value of the wireless network within a predetermined time period reaches a data flow rate turn-off threshold value, if the operating parameter is the total data flow rate value; determining whether a total power consumption value of the wireless network within a predetermined time period reaches a power consumption turn-off threshold value, if the operating parameter is the total power consumption value; and determining whether an instantaneous data flow rate value of the wireless network within a predetermined time period is continuously smaller than an instantaneous turn-off threshold value, if the operating parameter is the instantaneous data flow rate value; acquiring the operating parameter of the wireless network provided by the wireless access device comprises receiving the operating parameter of the wireless network sent by the wireless access device; and controlling the wireless access device to turn on or turn off the wireless network comprises sending a turn-on or turn-off command to the wireless access device, the turn-on command being configured to trigger the wireless access device to turn on the wireless network, and the turn-off command being configured to trigger the wireless access device to turn off the wireless network.