A multi-functional portable skin care device, comprising: a roller unit including a first roller and a second roller and an insulating ring member interposed between the first roller and the second roller; a connecting unit including a shaft member passing through the centers of the first roller, the second roller and the insulating ring member, a conductive pipe of a certain length coupled to the rear end of the shaft member and connected in the longitudinal direction and electrically connected to any one of the first and second rollers, and a conductive rod of a certain length installed in the longitudinal direction along the hollows of the conductive pipe and the shaft member and electrically connected to any one of the first and second rollers; and a main body unit including a main body case mechanically connected to the roller unit through the connecting unit, a battery installed inside the main body case and supplying electricity to the first and second rollers, a control circuit board for controlling the power supplied to the first and second rollers, a control button for selecting the current supplied to the first and second rollers, and an LED display for displaying the operating state of the first and second rollers, characterized in that in the hollow of the shaft member, one or more eccentric vibration motors are installed, and the vibration motor is connected to the control circuit board of the main body unit through a wire passing through the hollow of the conductive pipe, wherein the device further includes a protective cover detachably coupled to the front end of the main body unit to surround and protect the roller unit, and a wireless charging cradle to which the main body unit can be vertically coupled, the wireless charging cradle having a coupling recess provided with a power transmission coil inside so that the wireless charging cradle wirelessly supplies electricity to the battery through a power receiving coil installed inside the main body unit, thereby charging the battery, and wherein the device further includes an auxiliary cover comprising a cover body made of a semi-circular tubular shape so as to surround an upper end of the roller unit, a connecting part extending a certain length backward from the rear end of the cover body, and a fixing part integrally formed at the rear end of the connecting part and surrounding the outer surface of the main body unit to fix. a roller unit including a first roller and a second roller and an insulating ring member interposed between the first roller and the second roller; a connecting unit including a shaft member passing through the centers of the first roller, the second roller and the insulating ring member, a conductive pipe of a certain length coupled to the rear end of the shaft member and connected in the longitudinal direction and electrically connected to any one of the first and second rollers, and a conductive rod of a certain length installed in the longitudinal direction along the hollows of the conductive pipe and the shaft member and electrically connected to any one of the first and second rollers; and a main body unit including a main body case mechanically connected to the roller unit through the connecting unit, a battery installed inside the main body case and supplying electricity to the first and second rollers, a control circuit board for controlling the power supplied to the first and second rollers, a control button for selecting the current supplied to the first and second rollers, and an LED display for displaying the operating state of the first and second rollers, characterized in that in the hollow of the shaft member, one or more eccentric vibration motors are installed, and the vibration motor is connected to the control circuit board of the main body unit through a wire passing through the hollow of the conductive pipe, wherein the device further includes a protective cover detachably coupled to the front end of the main body unit to surround and protect the roller unit, and a wireless charging cradle to which the main body unit can be vertically coupled, the wireless charging cradle having a coupling recess provided with a power transmission coil inside so that the wireless charging cradle wirelessly supplies electricity to the battery through a power receiving coil installed inside the main body unit, thereby charging the battery, and wherein the device further includes an auxiliary cover comprising a cover body made of a semi-circular tubular shape so as to surround an upper end of the roller unit, a connecting part extending a certain length backward from the rear end of the cover body, and a fixing part integrally formed at the rear end of the connecting part and surrounding the outer surface of the main body unit to fix.