A method for switching access points of a wireless network via sharing communications is disclosed. A host computer and a client computer are connected to a first wireless network by a first communication system. The host computer determines a communication quality to the first wireless network. If the communication quality falls below a predetermined value, the host computer connects to a second wireless network to shift to a sharing communication mode to connect the client computer to the second wireless network. The host computer that has shifted to the sharing communication mode then connects to the client computer by a second communication system to connect the client to the second wireless network.