The utility model discloses an automatic waterproof cloth wrapping device for bundled materials. The device comprises a box-shaped mounting frame, an unreeling machine for placing a waterproof yardageroll is arranged at the position, corresponding to the end part of the material, of the mounting frame; belt conveying devices arranged in the length direction of materials are arranged on the two sides of the mounting frame correspondingly. a clamping hand for clamping the edge of the waterproof cloth is arranged on a belt of the belt conveying device; a material containing table used for layingwaterproof cloth and containing materials on the waterproof cloth is arranged in the middle of the mounting frame. A cutting device for cutting waterproof cloth is arranged at the position, close tothe unwinding machine, of the installation frame, a plurality of side wrapping mechanisms are evenly distributed at the positions, close to the two sides and the end of the material binding material,of the installation frame, and corner wrapping mechanisms are arranged at the positions, close to the end, of the two sides of the material binding material on the installation frame respectively.