The invention relates to a grinding parameter optimizing method based on aviation gear tooth face grinding burns. On the premise of effectively controlling the grinding burns, grinding parameters are optimized to improve grinding quality to the maximum extent, reduce tooth face roughness and improve production efficiency. Three evaluation indexes, namely, the surface roughness Ra, the grinding metamorphic layer depth h and the grinding-away rate Zw are selected for evaluating tooth face grinding quality, the grinding burn degree and production efficiency correspondingly. A grinding orthogonal experiment is designed, a range analysis method is utilized for analyzing the influence rules of all the grinding parameters on different evaluation indexes, a comprehensive equilibrium method is utilized for analyzing the grinding parameters, and finally the grinding parameter optimizing method based on tooth face grinding burn control is obtained. The grinding burns are controlled to the maximum extent, meanwhile, the tooth face quality is improved effectively, the tooth face roughness is reduced, production efficiency is improved, and important benefits are achieved on practical production of gears.