Farmland soil improvement and remediation device

The utility model provides a farmland soil improvement and remediation device, and belongs to the technical field of farmland soil. The farmland soil improvement and remediation device comprises a vehicle body, a vehicle plate and a ploughing mechanism, the ploughing mechanism comprises a first hydraulic cylinder, the top of the output end of the first hydraulic cylinder is fixedly connected with a limiting rod, the top of the vehicle plate is fixedly connected with a limiting frame, and the interior of the limiting frame is slidably connected with a limiting block; a limiting block and a limiting rod are arranged on the left side and the right side of the first hydraulic cylinder, fixing rods are fixed to the sides, opposite to each other, of the limiting block and the limiting rod, a plowing plough and a spraying mechanism are installed between the two fixing rods, and the spraying mechanism comprises a liquid box. The first hydraulic cylinder, the plowing plough, a motor, a spiral blade and a spraying head