The invention discloses a thiourea gold extraction method which is characterized in that a gold-bearing ore is separated when grinding a gold monomer and is graded by a whirlcone; the whirlcone leads the overfall of the slurry of the ore to enter the magnetic separation and separate the magnetic elements out; the overfall of the slurry of the ore enters a vitriol extraction slot; the concentration of the slurry of the ore achieves 30 to 34 percent; after the vitriol is extracted for 4 hours, the overfall of the slurry of the ore respectively flows into the extraction absorption slots of number one to number five to respectively carry out absorption; 0.7 to 3.7 kg of thiourea is added in each ton of ore powder; after every absorption, 20 percent of the gold loaded carbon is taken out to carry out electrolytic and electro winning for extracting the gold and carrying out vitriol liquor washing; the copper and stibium with a certain amount can be also extracted from the vitriol liquor after being washed. As the thiourea gold extraction is acid, the technical index is better than the alkaline sodium cyanide gold extraction. Besides, as the thiourea and the fertilizer of carbamide has isomorphism to plants, the method used for extracting gold not only has a high yield, the waste water drained by the method not only is environmental friendly and has no pollution to the environment, but also is beneficial to the growth of plants.