A hair curler includes: a body unit having an electric circuit; a heating unit connectedly fixed to one end portion of the body unit and allowing hair to be wound around on an outer circumferential surface thereof; a rotation unit rotatably provided on one end portion of the heating unit so as to rotate in the circumferential direction of the heating unit, and having one side extendedly formed in the lengthwise direction of the heating unit so as to rotate around the circumference of the heating unit; a hair holding unit attached movably to the extendedly formed one side of the rotation unit in the lengthwise direction of the heating unit, and accommodating the hair wound around the heating unit; and moving means for moving the hair holding unit in the lengthwise direction of the heating unit, such that the hair is spirally wound around the heating unit.