Based on the properties of low-sulfur gold concentrates and roasting gold concentrates,the thiocyanate method is used for gold leaching.The effects of sodium thiocyanate concentration,leaching time,manganese dioxide content,glycine content on the gold leaching rate were investigated.By those means,the optimal gold leaching conditions are obtained and compared with cyanide leaching method.The results showed that under the optimal conditions:leaching time 48 h,pH 1,liquid-solid ratio 2:1,manganese dioxide dosage 1 g/kg,glycine dosage 1 g/kg,when the sodium thiocyanate concentration is 1.0 mol/L,the gold grade in the low-sulfur gold concentrate decreased from 47.22 g/t to 9.11 g/t,and the gold leaching rate was 80.7 %,both the gold leaching rate and the leaching speed were lower than that of cyanide leaching method.When the concentration of sodium thiocyanate was 0.6 mol/L,the gold grade in the roasting gold concentrate decreased from 51.90 g/t to 1.50 g/t,and the gold leaching rate was 97.1 %.The gold leaching rate and leaching speed were close to that of cyanide leaching method.The thiocyanate method is more applicable to the leaching of roasting gold concentrates.