This product is a specially processed and treated high-efficiency fire extinguishing agent for mining use. It features a three-dimensional network structure internally, and contains many hydrophilic groups such as carboxyl, hydroxyl, and amino groups, thus exhibiting water absorption capabilities. It possesses strong water absorption capacity and water retention properties. When used, it can be directly mixed with water in appropriate proportions. It exhibits excellent properties such as strong antioxidant resistance, good film-forming ability, and good wall adhesion, thereby achieving the purposes of oxygen isolation in coal seams, preventing oxidation, heat insulation, temperature reduction, and fire extinguishment, comprehensively improving the flame retardant effect and fire prevention/extinguishment efficacy.