The present invention relates to a high-frequency hand piece for skin treatment, the high-frequency hand piece comprising: a handle of which one end part is connected with a high frequency generation unit and has a cylindrical shape so as to be capable of being held in a hand, and the other end part has an opening formed thereon; and a needle cartridge which is insertedly coupled to one side of the handle and has needles formed thereon that output a high frequency to skin by having power supplied thereto. The needle cartridge comprises: a holder which has both sides thereof opened and has a passage formed therein; a needle piece body which is coupled to one side of the holder and has needles that are inserted into skin formed thereon; a connector which is coupled to the opening on the other side of the holder, is connected with one side of the needle piece body, and has an insertion part formed on the other side thereof; and a power plug which supplies power by being insertedly coupled to the insertion part of the connector so as to be separable and coupled to the handle. Accordingly, the cartridge having needles integrally formed thereon may be separated from the handle, and thus may be easily replaced with a new cartridge, and the needles may be replaced in a more hygienic manner.La présente invention concerne une pièce à main haute fréquence pour le traitement de la peau, la pièce à main haute fréquence comprenant: une poignée dont une partie de l'extrémité est reliée à une unité de génération de haute fréquence et qui a une forme cylindrique de manière à pouvoir être maintenue dans une main, et dont l'autre partie de l'extrémité comporte une ouverture formée sur celle-ci; et une cartouche d'aiguille qui est couplée par insertion à un côté de la poignée et qui comporte des aiguilles qui émettent une haute fréquence vers la peau en étant alimenté en énergie par celle-ci. La cartouche d'aiguille comprend : un support dont les deux côtés sont ouverts et comporte un