The invention discloses a treatment device for heavy
metal pollution in soil. The device comprises a platform, and a front roller and a rear roller are rotatably mounted on support legs at the front end and the rear end of the platform respectively; a
shovel plate is rotationally installed on the bottom face of the front end of the platform, a
liquid storage tank is installed on the upper end faceof the platform, a spraying plate is installed at the bottom of the
shovel plate, and a liquid conveying
pipe communicates between the spraying plate and the
liquid storage tank; and a sleeve is fixed to the bottom face of the rear end of the platform, a telescopic column is movably sleeved with the sleeve, an installation plate is fixed to the bottom of the telescopic column, and a plurality ofrakes are arranged on the installation plate. The
surface layer of contaminated soil is shoveled up through the
shovel plate, meanwhile, remediation liquid is sprayed to the inner layer of the soil through a spray head, and then the rakes reciprocate up and down, so that the soil layer is continuously punctured, the remediation liquid permeates into the deep part of the soil layer from puncture holes, and the
treatment effect is improved; and soil shoveling,
pesticide spraying, soil covering and
puncturing processes are continuously carried out, so that uninterrupted treatment of soil can be realized, and the treatment efficiency is high.