Abstract: The paper takes the ore-dressing plant of a gold production enterprise as the research subject,and studies the total cyanide balance in the all-sliming cyanidation process using data analysis and sampling monitoring.The research results show that if sampling and analysis errors are not considered,with a stable ore-dressing process,unchanged primary and anxiliary materials and pollution generation links,unchanged tailings production manners,and steady production,the total cyanide balance rate in the ore-dressing process is 90.48 %,the total cyanide that goes into the tailings pond with tailings accounting for 47.56 %,the total cyanide consumption during the leaching and absorption accounting for 42.57 %,the total cyanide consumption during desorption electrowinning and activated carbon regeneration accounting for 0.35 %,and the rest 9.52 %  accounted for in the production process by volatilization,transfer to organic nitrogen compound，flow into the metallurgical system with gold slime,and so on.The study provides a technical basis for total cyanide balance and environmental management in similar gold production enterprises.