Portable waterproof device for environment design drawing

The utility model discloses an environmental design drawing portable waterproof device which comprises a machine body, the upper end of the machine body is connected with a fixing device in a sliding mode, a cavity is formed in the machine body, a cylinder is arranged in the cavity, the cylinder is fixedly connected with a flexible plastic strip-shaped clamp, the cylinder is fixedly connected with a rotating shaft, and the rotating shaft is fixedly connected with a waterproof device. One end of the rotating shaft penetrates through the axis of the cylinder and is rotationally connected with the inner wall of the cavity, the other end of the rotating shaft penetrates through the inner wall of the cavity and is fixedly connected with a knob, and the knob is limited through a limiting device. Through the arrangement of the transparent protective film, a traditional drawing protection mode can cause folding damage of the drawing, the drawing can be damaged after meeting water due to the fact that the drawing is n