The invention discloses a storage device for underground sampling samples, and belongs to the field of sample storage devices. The storage device is used for sample storage, the storage device comprises a cylinder body, the top of the cylinder body is open and is connected with a cover body in an inserted manner, an adjusting ring body sliding relative to the cylinder body is arranged on the cylinder body, a clamping hook is hinged to the edge of the top opening of the cylinder body, a torsional spring is arranged at the hinged point of the clamping hook and the cylinder body, the adjusting ring body drives the clamping hook to rotate around the hinged position through a connecting rod mechanism, and the free end of the clamping hook is in press fit with the upper surface of the cover body. According to the technical scheme, containing and protection of the sampling samples can be achieved, and the stability of the samples in the storage device is improved.