The invention discloses a gold leaching method for reducing the usage amount of thiosulfate. In a traditional thiosulfate method, Cu(II) and NH3 need to be added for catalyzing and gold leaching, but, S2O3<2-> is prone to being oxidized and decomposed by Cu(NH3)4<2+>, and consequently the consumption of thiosulfate is large. For the problem of large consumption of a leaching agent in the copper ammonia catalysis thiosulfate gold leaching process, a novel technology for manganese coke phosphate catalysis and thiosulfate gold leaching is provided. The method is mainly characterized in that manganese coke phosphate catalysis is adopted for replacing traditional copper ammonia catalysis, and in other words, manganese sulfate and sodium pyrophosphate or potassium pyrophosphate are added in thiosulfate gold leaching ore pulp for replacing adding of copper sulfate and ammonium hydroxide. By means of the technology, consumption of the thiosulfate can be obviously reduced, and the gold leaching rate of the method is equivalent to that of traditional copper ammonia catalysis.