A hinge module including a first hinge having a first gear, a second hinge having a second gear, and a gear rack is provided. The first and second gears are movably coupled to the gear rack. The first hinge moves on the gear rack via rotation of the first gear, the second hinge moves on the gear rack via rotation of the second gear, and the first hinge and the second hinge move closer or away from each other via rotation. An electronic device is also provided.