Polluted soil pretreatment device

The utility model discloses a contaminated soil pretreatment device which comprises a mixing tank, a discharging pipe is installed at the bottom of the mixing tank, a stirring mechanism is installed in the mixing tank and comprises a fixing plate installed in the mixing tank, a first motor is installed at the top of the fixing plate, and a second motor is installed at the bottom of the mixing tank. And an output shaft of the first motor penetrates through the fixing plate and is connected with a rotating shaft. Compared with the prior art, the crushing mechanism is arranged, the cutter groove and the crushing roller are used for crushing polluted soil, caked polluted soil can be effectively crushed, meanwhile, the agent adding mechanism is used for assisting in adding agents, then the stirring mechanism is used for mixing the polluted soil and the agents, the agents are fully dispersed in the polluted soil, and therefore the polluted soil can be effectively crushed. And meanwhile, the stirring mechanism is ar