An electronic device includes an outer case, a wire assembly, and a water-proof glue member. The outer case has an inner space and a hole communicating with the inner space. The wire assembly extends from the inner space of the outer case to outside of the outer case through the hole. The wire assembly includes a plurality of wires, a flexible tube covering the wires, and a hard supporting tube located between the wires and the flexible tube. The water-proof glue member is disposed between a wall surface of the outer case surrounding the hole and the wire assembly.