The water-based steel structure bottom surface integrated paint uses water as a diluent, which eliminates a large number of harmful substances in the coating, which is environmentally friendly, green and healthy, and the use of water-based paint is safer and healthier. Water-based steel structure series paint has good weather resistance, can maintain good paint and film condition even under sunlight, and has strong color and gloss retention, so it is suitable for use in outdoor lighting environment. It is mainly suitable for painting in light anti-corrosion environments such as steel structure and steel formwork in the plant.