A gum massaging tool includes a handle portion which accommodates electric or mechanical members and in which a selector switch is provided in an exposed manner; a fixed shaft portion that is fixed to the handle portion so as to extend from one end of the handle portion and is heated according to an operation of the selector switch; a gum contact portion that is rotatable around a distal end portion of the fixed shaft portion and that includes a carbon body which receives heat from the fixed shaft portion and transfers the heat to a gum contacting surface; and a supporting portion that is rotatably engaged with and supports the gum contact portion and is detachably attached to the handle portion.