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To identify the capacity of waste leachate absorption in Populus euramericana and Betula platyphyllavar. japonica, four different treatments were applied to seedlings: leachate solution (100% leachate),50% dilution (50% leachate: 50% water, v/v) and 25% dilution, (25% leachate: 75% water, v/v) wereapplied to these two species. After the experiment, concentrations of heavy metals in tre parts wereanalyzed by an Inductively Coupled Plasma emission spectrometer (ICP). Treatment with wasteleachate significantly stimulated both Populus euramericana and Betula platyphylla var. japonicabiomass production relative to the water control. In addition, these species showed good absorptioncapacity of As, Co, Hg and Ni elements. The results of this study suggested that these two species canabsorb the toxic materials through their roots and transport them to stems or leaves.