The utility model discloses a soil sampling device for environmental governance, which comprises a bottom plate, the top of the bottom plate is fixedly provided with a connecting rod, the top of the connecting rod is fixedly provided with a transverse plate, the bottom of the transverse plate is provided with a first hydraulic cylinder, and the tail end of a piston rod of the first hydraulic cylinder is hinged with a universal brake wheel. A first opening and a second opening are formed in the bottom plate, and the universal brake wheel is located in the first opening. The output shaft of the second motor drives the sampling cylinder to rotate to sample soil, the sampling cylinder is cylindrical, the soil can be sampled in a layered mode, soil of different depths can be accurately sampled, the soil analysis accuracy of the sampling cylinder is improved, the output shaft of the first motor drives the first bevel gear to rotate to enable the second bevel gear to rotate, and the sampling cylinder is driven by the second motor to rotate. A second bevel gear drives an inner threaded sleeve to rotate in a bearing, so that a threaded rod moves up and down, the height of a sampling barrel can be adjusted, soil with different depths can be sampled, and the sampling convenience is improved.
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