A wireless network connection establishment method, comprising: obtaining, by a first terminal device, wireless network information, wherein the wireless network information is used to join a wireless network on which the first terminal device is located, and an access point of the wireless network on which the first terminal device is located is the first terminal device, wherein the first terminal device builds the wireless network, wherein the wireless network is Wi-Fi network; sending, by the first terminal device, the wireless network information to a second terminal device by an NFC connection; and receiving, by the first terminal device, a first request message that is sent by the second terminal device according to the wireless network information, and establishing a wireless network connection to the second terminal device according to the first request message; when the first terminal device needs to exit the wireless network on which the first terminal device is located, sending, by the first terminal device, a network capability collection instruction to one or more other terminal devices on the wireless network on which the first terminal device is located; receiving, by the first terminal device, respective wireless network capability information that is sent by the one or more other terminal devices according to the network capability collection instruction; determining, by the first terminal device according to the received wireless network capability information, that one terminal device serves as a new first terminal device, wherein the new first terminal device serves as a new access point, wherein the new first terminal device builds a new wireless network; and sending, by the first terminal device, indication information to the one or more other terminal devices, wherein the indication information is used to instruct the one or more other terminal devices to establish a new wireless network connection to the new first terminal device. obtaining, by a first terminal device, wireless network information, wherein the wireless network information is used to join a wireless network on which the first terminal device is located, and an access point of the wireless network on which the first terminal device is located is the first terminal device, wherein the first terminal device builds the wireless network, wherein the wireless network is Wi-Fi network; sending, by the first terminal device, the wireless network information to a second terminal device by an NFC connection; and receiving, by the first terminal device, a first request message that is sent by the second terminal device according to the wireless network information, and establishing a wireless network connection to the second terminal device according to the first request message; when the first terminal device needs to exit the wireless network on which the first terminal device is located, sending, by the first terminal device, a network capability collection instruction to one or more other terminal devices on the wireless network on which the first terminal device is located; receiving, by the first terminal device, respective wireless network capability information that is sent by the one or more other terminal devices according to the network capability collection instruction; determining, by the first terminal device according to the received wireless network capability information, that one terminal device serves as a new first terminal device, wherein the new first terminal device serves as a new access point, wherein the new first terminal device builds a new wireless network; and sending, by the first terminal device, indication information to the one or more other terminal devices, wherein the indication information is used to instruct the one or more other terminal devices to establish a new wireless network connection to the new first terminal device.