It is a two-component inorganic spraying material. After the two components are mixed and stirred evenly, it can be sprayed directly without adding water, offering simple operation. The maximum spraying thickness can reach 10 mm. The product is environmentally friendly, pollution-free, and features good tensile strength and flexibility without cracking. It has strong adhesion to the base layer and can effectively seal the joints at the roof of gob-side entry retaining and the joints of flexible formwork bags, blocking gas to form an effective seal.