Sampling and digging device for geological exploration

The invention relates to the technical field of digging devices, and particularly discloses a geological exploration sampling digging device which comprises a digging pipe, the bottom of the digging pipe is a tip part, the middle of the digging pipe is a sampling part, and the sampling part is in a semi-cylindrical shape; the insertion plate is fixedly connected with one side of the sampling part, and the insertion plate is used for being matched with the tip part to be inserted into soil; the rotating assembly is matched with the sampling part to form a closed cavity; the freezing assembly and the freezing assembly are matched with the rotating assembly to freeze the specimen, the soil specimen can be sealed and stored by rotating the rotating assembly to be matched with the digging pipe, and then the soil which is high in water content and easy to collapse can be quickly frozen by matching the rotating assembly with the freezing assembly, so that collapse of the specimen is avoided, and the accuracy of the