The invention provides a method for eliminating sulfur and organic matters in bauxite dissolved ore pulp through synchronous oxidation and relates to a method for eliminating influence of sulfur and organism matters in dissolved pulp in the process of producing aluminum oxide by a hydraulic diaspore type bauxite Bayer method. The method is characterized in that the technological process comprisesthe following steps: introducing heated ore pulp and high-pressure oxygen into a tubular reactor to mix and performing oxidation reaction; and after oxidizing S2 and organic matters in the ore pulp liquid phase, enabling the pulp from the tubular reactor to enter a Bayer method heat-preserving retention tank and a pressing boiler or enter a self-evaporator. According to the method for eliminatingthe sulfur and the organic matters in the bauxite dissolved ore pulp through synchronous oxidation, few non-condensable gases are generated in the oxidation process; and the reaction for performing synchronous oxidation to eliminate the influence of the sulfur and the organic matters is conducted in the tubular mixed reactor, and the mixing and mass transfer effect between the pulp and the oxygenis good.