The invention discloses a remote wireless communication concentrator and a signal transmission method thereof. The remote wireless communication concentrator comprises a body and a connecting line. The body comprises an upper body and a lower body which are slidably connected up and down. The connecting line is positioned at the side of the body; and the upper surface and the sides of the upper main body and the upper surface of the lower main body are respectively provided with more than one USB communication interface. A controller and a fault feedback device are arranged in the upper main body. Each USB communication interface is electrically connected with a controller through a signal detector. The controller is electrically connected with the fault feedback device; and the fault feedback device is in remote wireless communication connection with a background server. An electromagnet with magnetism after being electrified is arranged on the lower surface of the upper main body. The electromagnet is electrically connected with the controller. The upper surface of the lower main body is provided with an iron sheet matched with the electromagnet. A control switch for driving theelectromagnet to be powered off is arranged on the side edge of the lower main body; and a connecting socket for supplying power to the controller is arranged on the side edge of the lower main body.Fault problems can be found in time, and faults are fed back to a background for rapid maintenance.