The utility model discloses a stay -supported revolves head to be cut, including the haircut, cut the body and handle, the haircut includes immovable support and fixed tool bit, movable carriage and activity tool bit, the immovable support passes through special -shaped torsion spring connect with movable carriage's middle part, the immovable support passes through a round pin axle swing joint with movable carriage's afterbody, the tail end of immovable support is equipped with the arc groove, and movable carriage's tail end is equipped with the fixed pin, and the fixed pin removes in this arc groove, the handle includes activity handle and fixed handle, and the activity handle passes through a round pin axle swing joint with fixed handle, be equipped with the controlling means that acts as go -between between activity handle and fixed handle, cut the body acting as go -between in loop bar and loop bar, the one end that should act as go -between is connected the fixed pin of haircut, the other end is connected the controlling means that acts as go -between of handle. The utility model discloses it is small, light in weight, it is light and handy simple and convenient, accord with human mechanics principle, manipulation strength is low, and simple structure, and is reasonable compact, and operation simple accurate is with low costs, is favorable to popularizing and applying.