The invention discloses a beneficiation experiment method and system for efficiently recycling gold and silver from gold and silver precious liquid. The gold and silver precious liquid circularly flows through an adsorbing agent, the gold and silver precious liquid is extracted at set intervals in the process that the adsorbing agent adsorbs the gold and silver precious liquid, the gold and silver concentration of the gold and silver precious liquid is measured, the concentration of remaining gold and silver in the precious liquid is acquired, the content Q of gold and silver loaded on the adsorbing agent and the gold and silver adsorption efficiency epsilon are calculated, the relation curve between the gold and silver adsorption efficiency and the adsorption time is made, the interval where the adsorption efficiency is high and the interval where the silver recycling rate is high are judged, proper leaching time is determined in the common interval of the two intervals, and the optimal adsorption efficiency and the optimal silver recycling rate are acquired. By means of the method, the gold and silver adsorption efficiency is improved by 52% to 62%, and the silver recycling rate is increased to 65% to 75% from 30% to 35%. The method is a gold and silver recycling process which is high in gold and silver adsorption efficiency and silver recycling rate and suitable for recycling gold and silver from precious metal ores where gold and silver coexist and the silver content is high.