The subject of the present invention is to provide a microneedle array unit that is miniaturized and can pierce the skin even when pressed by fingers. According to the present invention, there is provided a microneedle array unit, which includes: a microneedle array having a sheet portion and a plurality of needle portions arranged on the inner side of the outer peripheral surface of one side of the sheet portion； a container that contains the microneedle array, And it includes a receiving portion with an opening and a protruding portion supporting the outer peripheral surface of the microneedle array, a deformable portion arranged on the side opposite to the opening and integral with the receiving portion, and a flange portion integral with the receiving portion that contacts the skin ； Lid, which closes the opening of the container； puncture device, which is a three-dimensional with two different areas on the upper and lower sides, and the small area of the upper and lower areas of the puncture device receives external force in the direction of the opening, thereby deforming the deformed portion , Press the other side of the microneedle array, the microneedle array deforms the protruding part by pressing, and is pushed out from the receiving part to the outside, and the deformed part maintains the deformed state, pressing the microneedle array.本發明的課題為提供一種小型化且用手指按壓亦能夠穿刺皮膚的微針陣列單元。依本發明，提供一種微針陣列單元，其具備：微針陣列，其具有片材部及配置於片材部的一面的外周面的內側之複數個針部；容器，其收容微針陣列，且包括具有開口及支撐微針陣列的外周面之突出部之收容部、配置於與開口相反的一側而與收容部為一體的變形部及與收容部為一體的與皮膚接觸之凸緣部；蓋部，封閉容器的開口；穿刺器具，其為上下具有兩個不同面積之立體，藉由該穿刺器具的上下兩個不同面積中的小面積接受開口方向的外力，藉此變形部發生變形，按壓微針陣列的另一面，微針陣列藉由按壓使突出部變形，從收容部被推出至外部，變形部維持變形的狀態，按壓微針陣列。
