Abstract: The disposition of Acid Mine Drainage (AMD) sludge has become a serious problem in wastewater treatment industry for a long period.An AMD sludge sample was taken from the wastewater treatment plant of the Duikeng tailings reservoir，Dabaoshan Mine，Guangdong Province，and an experiment was conducted to recover valuable metals from the sludge by sulfuric acid leaching method.There is 40 919.6 g/t Fe,14 320.6 g/t Mn，4 681.4 g/t Cu，7 557.4 g/t Zn，149.3 g/t Ni，360.9 g/t Pb，the impurity components are mainly quartz，calcite.In sulfuric acid concentration is 20%，solid-liquid ratio is 0.33 g/mL，the leaching time of 8 h，leaching temperature 30 ℃，the copper，zinc，nickel，lead，manganese and iron leaching rate were 99.49%，21.41%，51.21%，4.45%，55.86% and 34.25%.Using sulfuric acid leaching process recycling valuable metals element in precipitation slag economically feasible in technology，at the same time，the pressure of the wastewater treatment plant of environmental protection was alleviated.

Key words: Acid mine drainage, Sludge, Valuable metal, Acid leaching