Sampling device for geological exploration

The invention relates to the technical field of sampling devices, and provides a sampling device for geological exploration. The sampling device for geological exploration comprises a base, a sampling mechanism, a cleaning mechanism and a recycling mechanism, in the sampling process, through the arranged cleaning mechanism, a spiral drill rod can be washed through high-pressure water flow, the spiral drill rod can be rapidly cleaned, the working efficiency is improved, and compared with traditional manual cleaning, the sampling device has the advantages that the sampling efficiency is improved; the high-pressure water flow cleans the auger stem more cleanly and thoroughly, the situation that soil, rock debris and other impurities adhere to the auger stem, and consequently the working performance of the auger stem is affected is avoided, the clean auger stem can conduct drilling and sampling more efficiently, the accuracy and representativeness of each time of sampling are guaranteed, in the cleaning process,