Abstract: In this paper,the experiments were investigated to enhance the gold leaching rate from a two stages roasting calcine of arsenic-containing gold concentrate.Due to the calcine's property that major of gold was wrapped up by hematite,the method that sulphuric acid + helper leaching agent was used to dissociate gold being wrapped up was adopted,which could make gold being wrapped up exposed plenarily,and then enhanced the leaching rate of gold.The effect of sulphuric acid concentration,leaching temperature and the amount of helper leaching agent addition etc.on the iron leaching rate and the leaching rate of gold for cyanide process from the acid leaching residue.Under the optimum process conditions,compared to the two stages roasting calcine-pickling-cyanide leaching process,the gold leaching rate of this process increased about 12%.