A dip-coating processing device for waterproof coiled material, comprising a material tank and a tire base cloth, the material tank is filled with paint, the side wall of the material tank and / or the bottom of the material tank is provided with a heating mechanism, and the material tank is provided with an upper belt roller It is a pair of feeding rollers composed of the lower belt roller, the upper belt roller is located above the paint, the lower belt roller is partially immersed in the paint, the upper belt roller and the lower belt roller rotate in the same direction or in the opposite direction, and the paint passes through The lower belt material roll is transferred to the upper belt material roller, and the tire base cloth is in contact with the surface of the upper belt material roller. One end of the material pool is the feed end, which is provided with a guide roller and a tension roller, which are located above the paint, and the tension roller is connected with the lifting mechanism; one end of the tire base cloth passes through the guide roller in turn. After the roller and the tension roller, it is connected with the upper belt material roller. The invention has the characteristics of simple and reasonable structure, small overall volume, less land occupation, flexible operation, low production cost, low energy consumption, high production efficiency and wide application range.