Foldable garbage can for treatment vehicle

The foldable garbage can for the treatment vehicle comprises a garbage can main plate, a telescopic belt and a movable plate which are sequentially connected from left to right, and openings communicated with an inner cavity of the telescopic belt are formed in the garbage can main plate and the movable plate. A mounting frame capable of being hooked on a treatment vehicle and a cover plate located in an inner cavity of the mounting frame and capable of moving up and down to open and close an opening of the garbage can main plate are fixed to the left side of the garbage can main plate, and a mounting mechanism is arranged on the right side of the movable plate and comprises a baffle movably connected to the opening of the movable plate; a guide rod is fixed to the right side of the baffle, the surface of the guide rod is movably sleeved with a concentric-square-shaped plate, a spring is fixed to the left side of the concentric-square-shaped plate, and the left side of the spring is fixedly connected with the