Adhesive patching aid for microneedle adhesive skin patch

An applicator for puncturing skin comprising an assisting tool, an adhesive tape, and a microneedle, wherein the assisting tool is used as a supporting base to set the adhesive tape that carries the microneedle on an adhesive face thereof, wherein the assisting tool comprises a lower planar surface that is used to receive a pushing force, and an upper planar surface, wherein the lower planar surface has a greater surface area than that of the upper planar surface, and a pair of opposing inclined planar surfaces that extend from respective parts of a periphery of the upper planar surface to respective parts of a periphery of the lower planar surface such that a cross section of the assisting tool has a trapezoid shape, wherein an upper line and an oblique line of the trapezoid shape forms a dip angle of 130-175, and the adhesive tape is set on the assisting tool so as to extend over and contact the surface of at least a portion of the upper planar surface, at least a portion of one of the pair of opposing inclined planar surfaces, and at least a portion of another of the pair of opposing inclined planar surfaces, wherein the microneedle is placed on the upper planar surface of the assisting tool via the adhesive tape.