Abstract: An electronic device co-constructed with a hinge antenna and the hinge antenna thereof are provided. The electronic device includes a first casing, a second casing, a hinge assembly, and a hinge antenna. The hinge assembly is connected to the first casing and the second casing, so that the first casing and the second casing are opened and closed through rotation of the hinge assembly. The hinge assembly includes a horizontal fixed shaft. The hinge antenna is mounted on the horizontal fixed shaft and fixed on the hinge assembly. Therefore, the hinge antenna is mounted on the hinge assembly on the premise of maintaining the original appearance design, to improve the space utilization of the antenna.