A remote control vehicle includes a cart, an ultraviolet radiation tube and a remote control device. The cart has a video device, a control signal antenna and a video signal antenna. The control signal antenna and the video signal antenna are disposed by the video device. The remote control device is used to send out control signals to the control signal antenna so as to control the motions of the cart. In use, users place the cart in an air conduit of an air conditioning system and steer it with the remote control device so that the cart may reach every part in the air conduit. Also, the ultraviolet radiation tube is activated to kill all the bacteria and microorganisms in the air conduits. Such that, the users will not be exposed to the ultraviolet radiation emitted by the tube, and hence the safety of use is assured.