A Skateboard with a hinge structure, the hinge structure comprising a hinge unit that fixes a front board and a rear board in a separated state and elastically restoring the front board and the rear board against twist and casters that are mounted on the bottoms of the front board and the rear board, the hinge unit including: a first hinge housing that is formed in the rear board and has a hollow portion of which an end is opened to face the front board; a second hinge housing that is formed in the front board and has a hinge cylinder 202 of which an end is opened to face the rear board; a hinge shaft that is coupled to the first hinge housing at one end and is coupled to the second hinge housing with a bolt at the other end; at least one bearing that is coupled to the hinge shaft; a fixing and coupling member that is coupled to the ends of the front board and the rear board facing each other with a bolt so as to prevent the hinge shaft from being departing from the first and second hinge housings (100 and 200); characterized in that the hinge unit further comprises a fixed hinge cam that is axially coupled to the hinge shaft and one end of which is inserted into the hollow portion of the first hinge housing and the other end has a fixed contact portion 402 obliquely cut to form an elliptical shape; a movable hinge cam that is axially coupled to the hinge shaft and has a movable contact portion having a shape corresponding to the fixed contact portion of the fixed hinge cam, wherein the movable contact portion rotates along the fixed contact portion so as to be movable in the axial direction in the hinge cylinder of the second hinge housing; a hinge spring that is safely coupled to the inside of the hinge cylinder, is disposed between the movable hinge cam and the hinge cylinder, and applies an elastic force to the movable hinge cam. a first hinge housing that is formed in the rear board and has a hollow portion of which an end is opened to face the front board; a second hinge housing that is formed in the front board and has a hinge cylinder 202 of which an end is opened to face the rear board; a hinge shaft that is coupled to the first hinge housing at one end and is coupled to the second hinge housing with a bolt at the other end; at least one bearing that is coupled to the hinge shaft; a fixing and coupling member that is coupled to the ends of the front board and the rear board facing each other with a bolt so as to prevent the hinge shaft from being departing from the first and second hinge housings (100 and 200); characterized in that the hinge unit further comprises a fixed hinge cam that is axially coupled to the hinge shaft and one end of which is inserted into the hollow portion of the first hinge housing and the other end has a fixed contact portion 402 obliquely cut to form an elliptical shape; a movable hinge cam that is axially coupled to the hinge shaft and has a movable contact portion having a shape corresponding to the fixed contact portion of the fixed hinge cam, wherein the movable contact portion rotates along the fixed contact portion so as to be movable in the axial direction in the hinge cylinder of the second hinge housing; a hinge spring that is safely coupled to the inside of the hinge cylinder, is disposed between the movable hinge cam and the hinge cylinder, and applies an elastic force to the movable hinge cam.