The purpose of the present invention is to provide a blade for collecting skin tissue to maximally prevent scar of dog ear deformity by cutting both end parts of the skin below 30 degrees when collecting skin tissue and reduce the size of scar after suturing the skin cut part. The blade for collecting skin tissue has two apexes on the side, and a closed figure shape in which the tangential angle of each tangent at the two apexes is greater than or equal to 0 degree and less than or equal to 60 degrees.본 발명은 단면에 2 개의 꼭지점을 포함하고, 상기 2 개의 꼭지점에서 각각의 접선이 이루는 열각이 0도보다 같거나 크고 60도보다 같거나 작은 닫힌 도형 모양의 피부채취용 칼날에 관한 것이다.
