The disclosure discloses a wireless video conference system, which comprises: a conference control module and a wireless conference switching module which are located at a system side, and a wireless video conference terminal module located in a wireless terminal, wherein the conference control module is configured, when a new conference is started, to send data information of the new conference and data information of an original conference to the wireless conference switching module; the wireless conference switching module is configured, when the new conference is started, to send a conference start instruction to the wireless terminal in a member list of the new conference, and to switch the wireless terminal to the new conference or maintain the wireless terminal in the original conference according to a conference switching instruction from the wireless terminal; and the wireless video conference terminal module is configured to receive the conference start instruction from the wireless conference switching module, and to send the conference switching instruction to the wireless conference switching module according to a choice of a user. The disclosure further discloses a multi-conference switching method in a wireless video conference system. By the disclosure, the multi-conference switching of the wireless terminal in the wireless video conference system is implemented.