Xinda mining company uses all-sliming cyanidation CIP adsorption process to extract gold.Due to the toxicity of sodium cyanide,the storage and use process are potentially risky.In the meantime,as a means to answer the national call to build green mines,research is carried out on the replacement of sodium cyanide by environment-friendly gold leaching agent.The results show that under the same conditions to all-sliming cyanidation CIP adsorption process,the environment-friendly gold leaching agent can replace sodium cyanide in production,obtaining gold leaching rate over 90 %,similar to the gold leaching index with sodium cyanide;the environment-friendly gold leaching agent has good environmental benefits and its application is promising in gold industry.