An intelligent interactive all-in-one machine, comprising a processing device, a upper computer, a network transmission device and a signal transmission device, wherein the upper computer is connected to the processing device through the network transmission device, the upper computer is connected to an external network, and the upper computer is configured to output a network signal to the network transmission device, wherein the network transmission device is configured to transmit the network signal to the processing device, and the processing device is configured to transmit the network signal to the signal transmission device and ultimately to a terminal communicatively connected to the signal transmission device; the signal transmission device is configured to receive a screen transmission signal from the terminal communicatively connected thereto and output the screen transmission signal to the processing device, and the processing device is configured to process the screen transmission signal to obtain screen transmission data and transmit the screen transmission data to the upper computer; wherein the network transmission device comprises a wired network control switch and a switch, the wired network control switch is connected to the switch and a processor in the processing device, the wired network control switch is configured to prevent the switch from transmitting a network signal received from an external wired network to the processor, in response to a network signal received from an external wireless network; and the wired network control switch is configured to control the switch to transmit the network signal received from the external wired network of the external network to the processor, in response to no network signal received from the external wireless network of the external network. the upper computer is connected to an external network, and the upper computer is configured to output a network signal to the network transmission device, wherein the network transmission device is configured to transmit the network signal to the processing device, and the processing device is configured to transmit the network signal to the signal transmission device and ultimately to a terminal communicatively connected to the signal transmission device; the signal transmission device is configured to receive a screen transmission signal from the terminal communicatively connected thereto and output the screen transmission signal to the processing device, and the processing device is configured to process the screen transmission signal to obtain screen transmission data and transmit the screen transmission data to the upper computer; wherein the network transmission device comprises a wired network control switch and a switch, the wired network control switch is connected to the switch and a processor in the processing device, the wired network control switch is configured to prevent the switch from transmitting a network signal received from an external wired network to the processor, in response to a network signal received from an external wireless network; and the wired network control switch is configured to control the switch to transmit the network signal received from the external wired network of the external network to the processor, in response to no network signal received from the external wireless network of the external network.