The utility model discloses an effective sampling device capable of quantificationally drilling soil sample which includes a sampling drill 1 and a sample collecting drum 2; the top part of the sampling drill 1 is provided with a force application handle; the upper part of the sampling drill 1 is matched with the sample collecting drum 2 by threads; the upper part of the sampling drill 1 and the outside of the sample collecting drum 2 are provided with a locating nut 3. The design of the effective sampling device capable of quantificationally drilling soil sample provided with the locating nut realizes the purpose of quantificational sampling; moreover, the samples are hard to scatter; and the effective sampling device capable of quantificationally drilling soil sample is more convenient to repeatedly sample at different depths in the same sampling point, which greatly improves the working efficiency.