▎ 摘　　要

NOVELTY - A composite extinguishing agent comprises 2-5 parts mass antimonous oxide, 5-6 parts mass zinc borate, 5-6 parts mass potassium carbonate, 3-5 parts mass graphene, 2-4 parts mass ammonium oxalate, 2-4 parts mass sodium stearate, 1-2 parts mass Bacillus subtilis granules, 3-5 parts mass potassium silicate, 1-2 parts mass sodium polyacrylate, 5-10 parts mass ammonium polyphosphate, and 3-5 parts mass silica. USE - Composite extinguishing agent. ADVANTAGE - The composite extinguishing agent has large specific surface area, is nontoxic and environmentally-friendly, comprises B.subtilis granules, which rapidly decompose pollutants after extinguishing to a residual rate of less than 15%, and can be prepared by a simple, stable and reliable method. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for preparation of composite extinguishing agent, which involves mixing all components, grinding, press-molding, and installing in a fire extinguishing equipment.