The invention discloses a wet process for lead-silver residues, which comprises the following major steps: crushing lead-silver residues, carrying out ball milling, leaching with dilute
hydrochloric acid, adding
sodium hydroxide to the leached solution to hydrolyze so as to generate
bismuth oxychloride as a precipitate, transferring the
bismuth oxychloride to a
bismuth smelting system, and treating the
hydrolysis waste solution for cyclic use; and transforming the leached residues with
sodium carbonate, then recycling the mother solution, dissolving the transformed residues in silicofluoric acid, filtering the residues to obtain silver-enriched residues, transferring the silver-enriched residues to a silver
smelting system, and using the obtained lead silicofluoride solution for preparing a
lead electrolyte. The invention has the advantages of simple flow and no environmental
pollution; by preparing lead in lead-silver residues into lead silicofluoride used as the
electrolyte, the input amount of yellow lead in the lead
electrolysis system is reduced; by dissolving lead in silicofluoric acid, silver-enriched residues with a silver content up to more than 60% can be directly obtained, and the direct silver yield is high; the overall system realizes the cyclic use of the solution, and the comprehensive recycling degree is high; and the
treatment time is short, and the comprehensive cost is low.