Abstract: The present invention relates to a multi-functional hair-styling thermal treatment beauty device, which continuously rotates, in a clockwise or counterclockwise direction, a hair-styling part for holding hair while holding body part is held or can open an upper rotary body of the hair-styling part so as to enable hair styling to be easily performed. according to circumstances, and forms continuous grounding structure so as to enable power to be continuously supplied to a heating plate mounted inside the hair-styling part capable of continuously rotating, so that the heated state of the heating plate, caused by the heating of a current, is continuously maintained even during continuous rotation, and thus various hair styles can be more effectively created by the hair-styling part, so that hair styling is easily performed according to circumstances, and operation fatigue is reduced so that use convenience can. be improved.