The present invention relates to a microneedle roller, and the purpose of the present invention is to uniformly maintain protruding lengths of needle parts of a microneedle and improve durability of the needle parts by applying the microneedle in a circular plate type, and to improve assembling capability and thus remarkably improve the production efficiency by forming an inclination guide surface at a shaft fixing groove. The microneedle roller according to the present invention constituted to achieve the purpose, comprises: a handle having a fixing part provided at an upper side a roller shaft coupled and fixed onto the fixing part of the handle and a roller unit having microneedles and spacers alternately arranged and stacked and fixed by a first fixing cover and a second fixing cover, wherein the microneedles and the spacers are assembled on the fixing part of the handle to be able to rotate. The microneedle has a circular plate shape, and includes needle parts sharply and outwardly formed in a circumferential direction. The spacer has a predetermined thickness, and includes receiving grooves formed in one surface thereof. The needle part is received and fixed in the receiving groove such that the tip of the needle part protrudes out from the spacer by a predetermined length. The roller shaft is inserted into the roller unit, such that the roller shaft passes through the center of the roller unit and protrudes toward of both sides of the roller unit by a predetermined length. Both ends of the roller shaft are coupled and fixed to the shaft fixing grooves formed in an upper surface of the fixing part of the handle through a tension of the fixing part.COPYRIGHT KIPO 2014본 발명은 마이크로니들 롤러에 관한 것으로, 본 발명은 마이크로니들을 원판 타입으로 적용함으로써 마이크로니들의 니들부에 대한 돌출 길이를 일정하게 유지함과 동시에 니들부에 대한 내구성을 증대시킬 수 있도록 하는 한편, 축 고정홈 측으로 경사안내면이 형성됨으로써 롤러 축의 조립성을 향상시켜 생산능률을 현저히 증대시킬 수 있도록 함에 그 목적이 있다.이를 위해 구성되는 본 발명에 따른 마이크로니들 롤러는 상측에 고정부가 구비되는 손잡이와, 상기 손잡이의 고정부 상에 결합 고정되는 롤러 축과, 마이크로니들과 스페이서가 교번하여 배치되어
