An electronic device includes a casing, a circuit board, a connector and a waterproof component. The casing includes an opening structure. The circuit board is disposed inside the casing. The connector includes a first joint, a second joint and a soft cable. The first joint pierces through the opening structure. The second joint is disposed on the circuit board. The soft cable is electrically connected to the first joint and the second joint in a curvedly deformable manner. a length of the soft cable is substantially greater than an amount of vibration amplitude and a distance between the first joint and the second joint. The waterproof component is disposed between the first joint and the opening structure. Vibration from the casing can be transmitted toward the soft cable via the first joint, and is decayed by structural deformation of the soft cable.