Biological tissue sampling device

According to the present invention, provided is a biological tissue sampling device comprising: a case forming a bar-shaped body having a length in the forward and backward directions; a first holder elastically supported by a first coil spring in an inner space of the case, and having an inner needle provided at a front end thereof and having an accommodation space for accommodating a biological sample; a second holder elastically supported by a second coil spring in the inner space of the case so as to be disposed at the front of the first holder, and having an outer needle moving along the inner needle in a state in which the outer needle accommodates the inner needle, so as to close the accommodation space while cutting, by a front end portion thereof, the tissue sample positioned in the accommodation space; a loading block connected in the inner space of the case by a plurality of connection shafts so as to pull the first holder and the second holder; a loading lever coupled to a hinge shaft formed at a rear side of the case, and connected to the loading block moving along the inner space of the case, such that the loading lever rotates around the hinge shaft so as to retract the loading block along the space; and an opening lever for retracting the second holder while sliding from the front of the case toward the rear thereof, so as to open the accommodation space of a first needle.