Heavy metal contaminated soil leaching machine

The heavy metal contaminated soil leaching machine comprises a leaching chamber (1), a separation chamber (2), a water storage chamber (3), an ion exchange chamber (4), an aeration chamber (5), a filtering chamber (6) and a clear water chamber (7) which are sequentially communicated, wherein the leaching chamber (1), the separation chamber (2) and the water storage chamber (3) are positioned at the lower part of the machine body; the ion exchange chamber (4), the aeration chamber (5), the filtering chamber (6) and the clear water chamber (7) are positioned at the upper part of the machine body; a liquid outlet of the water storage chamber (3) is connected with a liquid inlet of the ion exchange chamber (4) through a water pump; and the clear water chamber (7) is connected with a water outlet pipe (7-2) through an overflow weir (7-1), so that water discharged from the water outlet pipe (7-2) enters the leaching chamber (1). The utility model has the advantages of simple structure and lower manufacturing cost;