Abstract: A liquid-proof structure for wires includes a wire frame and a blocker. The wire frame has an accommodating space, at least one limiting slot and a second hole. The wire frame is disposed on the first hole and the wire frame provides a connection between an interior of the casing and outside through the second hole. The limiting slot is used for limiting a position of the wire. The blocker has at least one wire slot. The blocker is disposed in the accommodating space of the wire frame, and the wire slot is used for limiting a position of the wire. The wire is limited and fixed by the wire slot of the blocker. The wire is wrapped by the wire slot, so that liquid is prevented from going through the liquid-proof structure by an elasticity and a liquid-resistance of the blocker.