Abstract: The Lab Leaching test on Gold Ore from a deposit of HuNan is Performed on the feasibility of mining.The results show that leaching with sodium cyanide is feasible.Effects of the concentrations of sodium cyanide and oxidant,the rate of liquid to solid on leaching results have been discussed.The leaching rate of gold was more than 90%.The technics parameters and conditions obtained from the Lab test can be provide a reference for field test.