The invention discloses a multifunctional plant breeding vehicle which is formed by combining a box body arranged on the upper portion of the vehicle and a cart arranged on the lower portion of the vehicle. The box body is a transparent body with a cover and without the bottom, a support of the box body is formed by a plurality of vertical columns and a plurality of transverse columns, transparent sliding doors are arranged around the periphery of the box body, and invisible screen windows are assembled around the inner side of the box body. a spraying system is arranged on the top transverse columns, the vertical columns are provided with lighting devices, the top of the cart is provided with a trough, positive temperature coefficient (PTC) temperature self-limiting heating pieces are paved on the bottom surface and the periphery of the trough, the cart is further provided with a lower-layer partition plate for storing a control device, and the bottom of the cart is provided with universal wheels. The multifunctional plant breeding vehicle has multiple functions of warming, humidification, illumination and the like simultaneously, is convenient to move, can be freely moved out of the door or into the door according to weather changes so as to supplement light or temperature, and is suitable for plant breeding in a glass greenhouse, indoors or outdoors.