A method for sharing access to a wireless LAN access point is applicable between a target client device and a host device which is coupled to the wireless LAN access point, and includes the steps of: configuring the host device to send an invite request to the target client device, configuring the host device to receive an invite response sent by the target client device, and configuring the host device to exchange connection information with the target client device, such that the target client device may connect to the wireless LAN access point according to the connection information.