The invention discloses a method for adsorbing precious metal complex ions in thiosulfate lixivium through molybdenum disulfide. The method comprises the following steps that a MoS2 base material is placed in a thiosulfate complex solution of precious metal to carry out adsorbing; and the solution obtained after adsorbing is carried out is filtered and dehydrated, and the MoS2 base material carrying precious metal elementary substance is obtained. The semi-conductor property of the MoS2 material is utilized for reducing gold/silver in the gold/silver thiosulfate complex solution into gold/silver elementary substance to be adsorbed to the surface of the MoS2 material, enrichment and reduction in thiosulfate gold/silver leaching liquid can be completed through one step, and the flow is simplified. Meanwhile, the adsorption amount of the MoS2 material to the gold/silver is up to a plurality of grams of Au/Ag adsorbed by an adsorbing agent of each gram, the adsorption amount is hundreds ofand even thousands of times that of an existing adsorbing agent, and the recovery effect of the gold/silver in the thiosulfate lixivium is greatly improved. The MoS2 material is easy to prepare, andlarge-scale batch production can be achieved.