In light of the challenges obstructing the green development of gold industry such as high consumption,difficult utilization,high toxicity and big risk related to cyanide used in gold hydrometallurgy,Changchun Gold Research Institute Co.,Ltd.proposes a source reduction-closed circuit-in-situ treatment-risk control whole-chain innovative technology system for cyanide.The innovative technology system has developed environmentally friendly leaching agent and efficient decyanation agent,cyanide regeneration and utilization technology,heterogeneous system three waste in-situ synergistic treatment technology and cyanide residue pond leaching solution emergency super-low discharge technology,and these key technology and equipment series achieve recovery of valuable materials,waste treatment with waste and safe and clean production,and effectively advance sustainable and robust development and green mine construction of gold industry in China.