A hinge device includes two rotation units and a base capable of relatively rotating; one radial side of the base is formed with an arc-shaped recess in which an axial connection part is formed, one axial side of the arc-shaped recess is formed with an action space; the rotation units are respectively disposed in the action space and the arc-shaped recess, and axial sides thereof are respectively formed a first axial connection part and a second axial connection part and an arc-shaped structure and an arc-shaped channel, each axial connection part is connected to each other for allowing the rotation units to respectively move along the action space and the arc-shaped recess for being rotated in or out of the base; the rotation units can only be in contact at the axial side for forming a sequentially rotating status but also at a radial lateral circumference for synchronously rotating.