Based on leaching experiment

the leaching rule of heavy metal in coal mine waste was brought out.The research showed that: Zn

Cr

Pb and Cu concentrations were most in the leachate of weathered coal waste

and the concentration became stable rapidly;only Zn concentrations are found in fresh coal waste leachate in the beginning time.The soil around coal mine waste also was contaminated by heavy metal

such as Zn

Cr and Pb.The process that heavy metal is leached out is a long time

and heavy metal could be migrated and accumulated.Some heavy metal gradually decreased with the soil depth increasing in the soil section.