Stainless steel foam storage tank with spray gun is an efficient tool designed for the storage and spraying of chemicals, cleaning agents or foam generators. The tank body is made of high-quality 304 or 316 stainless steel, which has good corrosion resistance, oxidation resistance and durability, and is suitable for a variety of harsh environments and high-intensity use scenarios. The storage tank is compact and lightweight, with moderate capacity, easy to carry and mobile operation. The product is equipped with a high-performance spray gun with a finely designed spray gun head, uniform spraying, and a stable foam flow rate. Users can adjust the spray pressure as needed to ensure the efficiency and accuracy of cleaning, disinfection or other operations. The tank body is equipped with a visual liquid level gauge, which is convenient for users to monitor the liquid remaining in real time and avoid stoppages. In addition, the tank mouth adopts a wide mouth design for easy filling and cleaning and maintenance.