The present invention relates to a portable HIFU skincare device. The portable HIFU skincare device (1) of the present invention is divided into three parts. A main body (100) has a chargeable battery embedded therein, has, provided on the main body, a power button, and a step button for controlling the strength of ultrasonic waves, and has a display for displaying the operation state of the device, including the number of shots. A cartridge (200) is mounted on a head part of the main body (100) and used, and has a HIFU transducer embedded inside the cartridge. A cradle (200): has, provided therein, the cartridge (200) and a charging part which can be charged by connecting to an adapter； accommodates the main body (100) via a rest groove, in a state in which the cartridge (200) is mounted on the main body (100)； comprises a UV lamp for disinfecting a head part of the cartridge (200) when the main body (100) is accommodated； and charges the internal battery of the main body (100). In an operation state, for each shot, the HIFU transducer moves linearly by means of a piezoelectric motor, radiates a plurality of ultrasonic waves to form, on an object, a plurality of ultrasonic focus areas, and, thereby, achieves a skin cosmetic effect. In the present invention, in particular, a piezo motor (216) is provided inside the cartridge (200).La présente invention concerne un dispositif portatif de soins de la peau HIFU. Le dispositif portatif de soins de la peau HIFU (1) de la présente invention est divisé en trois parties. Un corps principal (100) est doté d'une batterie rechargeable intégrée et comporte un bouton d'alimentation, et un bouton d'étape pour commander l'intensité des ondes ultrasonores, et possède un dispositif d'affichage pour afficher l'état de fonctionnement du dispositif, dont le nombre de décharges. Une cartouche (200) montée sur une partie de tête du corps principal (100) et comprenant un transducteur HIFU intégré est utilisée. Un berceau (200) : contient
