Micro-needle cosmetic instrument

The utility model discloses a micro-needle cosmetic instrument which comprises a shell, a micro-needle component and a driving mechanism arranged in the shell, wherein the micro-needle component comprises a fixed seat and a movable seat; the fixed seat is connected at the lower end of the shell in a detachable way; the movable seat is positioned in a cavity of the fixed seat, and the lower end of the movable seat is provided with micro-needles; the driving mechanism comprises a motor and a transmission component; a rotating shaft of the motor is connected with a transmission shaft; the transmission component comprises a base body, a rotating part and a driving arm; the base body is provided with a containing groove which is internally provided with a pivot shaft and a sliding block; the rotating part is pivoted on the pivot shaft; the upper end of the rotating part is provided with a blocking groove; the upper end of the driving arm is rotatablely connected with the rotating part, and the lower end of the dri