Soil sample treatment and preservation pipe suite

The utility model relates to a soil sample treatment preservation pipe suite which comprises a pipe body, a sealing cover and a liner pipe, the liner pipe is arranged in the pipe body, an upper supporting ring is arranged on the periphery of the top of the liner pipe, positioning holes are evenly formed in the upper supporting ring, a supporting frame is arranged at an opening of the pipe body, the positioning holes are assembled on a first positioning column on the supporting frame, and a second positioning column is arranged on the sealing cover. The liner tube is fixed in the tube body, and an annular blade is detachably arranged at an opening of the tube body. According to the utility model, a layer of polluted soil sample at the bottom of a divided columnar soil sample can be treated, the columnar soil sample is put into the annular blade opening, is rotated downwards and is pressed into the liner tube, and the outer surface layer of the columnar sample is cut and falls out of the tube body, so that the