The invention discloses a method for comprehensively recovering gold and silver from lead silver residues, and belongs to the technical field of mineral processing. The method comprises the following steps: performing sulfating calcination; performing water leaching on a roasted product produced by calcination; performing solid-water separation after water leaching; purifying supernatant and returning into a smelting system; performing mineral grinding on solid residues, and performing flotation to recover gold and silver. According to the method, a jarosite structure in the silver residues is broken through sulfating calcination treatment, so that soluble salt enters a leaching agent, and gold and silver are enriched greatly; a product obtained after water leaching is subjected solid-liquid separation, the supernatant is returned to the smelting system after purification, and the enriched sliver residues are ground and floated, so that recycling of secondary resources is realized; the method has the characteristics of high adaptability, high gold-silver recovery rate, low production cost and the like.