Farmland soil pollution monitoring device

The utility model belongs to the technical field of detection devices, and particularly relates to a farmland soil pollution monitoring device which is characterized in that a case comprises a case body, a first handle fixedly connected is arranged at the position, close to one end, of one side of the case body, a groove is formed in the other side of the case body, and a detection plate connected in a sliding mode is arranged on the groove; the detection plate is arranged in the box body, one side of the detection plate is provided with a second handle which is fixedly connected, the surface of one side of the box body is provided with a sampling hole, the box body is provided with an inner cavity, the sampling device comprises a first motor which is rotatably connected to one side of the box body, and the output end of the first motor is provided with a lead screw which is fixedly connected; a concave limiting plate is arranged on the outer side of the lead screw. The sampling device can move through the mo