Sanitation watering cart with long continuous working time

The utility model provides an environmental sanitation watering cart with long continuous working time, which comprises a watering cart body, a box body arranged on the watering cart body, a water supply device and a water tank, the water supply device and the water tank are arranged in the box body, a support frame is arranged at the middle height position of the box body, and the support frame is arranged on one side in the box body. The water supply device is fixedly installed on the supporting frame, an installation space with the cross section of an L-shaped structure is formed in the box body, the cross section of the water tank is of an L-shaped structure, and the water tank is installed in the installation space. The supporting frame is arranged in the middle of one side of the box body, the water supply device is installed on the supporting frame, the installation space with the cross section of the L-shaped structure is formed in the box body, meanwhile, the water tank is arranged to be of the L-sha