The invention discloses a closed-circuit process technique for recovering multiple metals from copper and lead electrolysis anode mud. The closed-circuit process technique is characterized in that a closed-circuit process is formed by connecting various chemical engineering including anode mud low-temperature oxidation roasting, copper, selenium and tellurium leaching through diluted sulphuric acid, lead soaking through diluted hydrochloric acid, neutralization, gold, platinum and palladium leaching through sodium chlorate, gold immersion through oxalic acid, replacing, dissolving, silver separating through sodium sulfite, restoring, secondary chlorination on primarily separated silver slug, secondary silver separation through secondary chlorination slug, selenium powder restoring, refining, acidizing and copper replacing. By means of the closed-circuit process technique, eight elements of gold, silver, platinum, palladium, selenium, tellurium, copper and lead can be recovered comprehensively, the recovering rate is high, the recovering rate of gold is larger than 99%, the recovering rate of silver is larger than 99%, the recovering rate of platinum is larger than 98%, the recovering rate of palladium is larger than 99%, the recovering rate of copper is larger than 99%, the recovering rate of selenium is larger than 98%, the recovering rate of tellurium is larger than 94%, the recovering rate of lead is larger than 96%, the level of refined selenium reaches 99.5%, the level of crude tellurium reaches 95.6%, the level of sponge silver reaches 99.97%, the level of sponge gold reaches 99.9%, and platinum, palladium, copper and lead exist in the type of intermediate products and can reach high level through further refining. The process technique is a closed-circuit circulating process flow, generates no waste liquid and waste residue, and is a perfect copper and lead electrolysis anode mud processing process and suitable for being popularized and used in copper and lead smelting enterprises.