Geological exploration sampling device

The invention provides a geological exploration sampling device, and belongs to the technical field of geological exploration, the geological exploration sampling device comprises a support, a plurality of first inserts, a first driving assembly, a second driving assembly, a second insert and a bearing assembly, and the first inserts are arranged on the inner side of the support. Compared with the prior art, the first inserting pieces are distributed at intervals in the initial state, so that the contact area between the first inserting pieces and soil can be reduced when the first inserting pieces are inserted into the soil layer, it is guaranteed that the first inserting pieces can be smoothly inserted into the soil layer, and in cooperation with rotation of the second inserting pieces and unfolding of the bearing assembly, the bearing effect is improved. The soil layer sample can be sealed on the inner sides of the first inserting pieces and the second inserting pieces, it is guaranteed that the soil layer