Abstract: The copper grade is 0.88 %,the gold grade is 1.76 g/t and the ore oxidation rate is 87.50 % in a gold copper oxide ore.The gold mineral is mainly native gold and electrum,and the copper mineral is mainly copper oxide.Based on the ore property,experimental study of copper leaching by heap leaching-gold leaching by cyanidation is carried out,investigating the effects of heap leaching parameters such as heap leaching grain size and sulfuric acid dosage,and cyanidation parameters such as grinding fineness and sodium hydroxide dosage on recovery index.The results show that under optimal conditions,the copper leaching by sulfuric acid heap leaching-gold leaching by cyanidation process can obtain copper leaching rate of 81.79 % and gold leaching rate of 95.00 %.