The present invention relates to a skin stimulator, and more particularly, to a method for stimulating the skin by introducing a plurality of needles into the skin, or supplying nutrients such as vitamin C and peptide to the dermal layer between the skin layer and the subcutaneous fat layer of the skin, The present invention relates to a skin stimulator for easily assembling a plurality of needles into a needle case so as to be easily set on a needle case, A concrete solution means of the present invention is that, "A needle case is provided at the lower end of a connecting member fastened to the lower end of the pushing rod, and a plurality of needles are set on a needle coupling plate, so that the needle coupling plate can be conveniently set on the needle case In the skin stimulator, A housing which is divided into upper space and lower space by a partitioning step so that the inner space is different from the upper space and the lower space, A pushing rod having a projection at the center in the longitudinal direction, a pushing rod having a threaded portion at the lower end peripheral portion thereof, and a pushing rod provided at a portion located in the upper hollow portion, which is the lower outer periphery of the pushing rod, And a screw groove is formed in a longitudinal direction at an upper center so as to be fastened to a screw thread formed in a lower outer peripheral portion of the pushing rod in the lower space portion and an insertion groove is formed in a lower end longitudinal direction A coupling member, coupled to the insertion groove, A needle case in which a plurality of locking grooves are formed and at the intersection where the locking grooves cross each other, a coupling hole is drilled, and a plurality of or more needle coupling plates coupled to the lower portion so as to be engageable with the coupling groove " As a structural feature, The present invention relates to a method for stimulating skin tissue by stimulating a dermis layer b
