Cyanide residue plant restoration method in gold industry

The invention relates to a cyanide residue plant restoration method in the gold industry. The method includes the specific steps that firstly, cyanide residues and activated sludge are fully stirred,and the mass ratio of the activated sludge to the cyanide residues is 1:2.4 to 1:19; secondly, a modifying chemical agent in a certain mass concentration is sprayed onto a fully stirred mixture of thecyanide residues and the activated sludge, and a pH value of the cyanide residues is controlled between 7 and 10; thirdly, water is used for moistening a mixture obtained in the second step, the water absorbing capacity of the cyanide residues is controlled at 0.01-0.05 Mpa; and fourthly, seeds of plants resistant to salt and alkaline are buried in a mixture obtained in the third step, the burying depth is controlled at 3 cm to 8 cm, and the planting density is 1000-5000 /m . Watering is performed regularly during plant growing period, it is guaranteed that the water absorbing capacity of the cyanide residues is at 0.