Automatic rice fertilizing device

The utility model discloses an automatic rice fertilizing device, which belongs to the technical field of fertilizing instruments, and comprises a back box provided with straps, a back cushion is fixedly connected below the front side of the back box, the bottom end of the back cushion is provided with an electric sweeping disc through a guide pipe, the front side of the back cushion is provided with a plurality of strip-shaped air bags, and the air bags are connected with the back box. The plurality of air bags are communicated with one another; a cavity body is fixedly connected to one side surface of the back box; the back cushion is arranged on the front face of the back box and can be conveniently attached to the waist of the back of the human body, supporting force can be provided for the waist through the back cushion, the comfort level of the back box can be improved when the back box is carried on the back, the air bags are arranged on the back cushion and can make soft contact with the back of the h