Abstract: The applicability of the vibration drag-reduction in the lunar regolith sampling process is studied in this paper. A lunar regolith DEM model is established according to the lunar microscopic parameters, the stress-strain curve of the lunar regolith is simulated, and the mechanism of the vibration drag-reduction is analyzed with respect to the lunar regolith excavation resistance described by the Balovnev soiltool interaction model. On the basis of the soil model, a lunar regolith excavation simulation is carried out with the vibration buckets in different oscillation amplitudes and frequencies. The relationships between the excavation resistance and loading and different vibration parameters are obtained. Meanwhile, by comparing the partial porosity of the lunar regolith under different vibration conditions, the vibration drag-reduction in the lunar regolith is verified to be applicable for the lunar regolith sampling.