Abstract: A self-defense device includes a flash light and a tear-gas dispenser. The flash light includes a head, a first cylinder connected with the head, a second cylinder connected with the first cylinder, and a reflector receivable in the head and a pipe formed through the reflector. The funnel includes a conical portion and a tubular portion. The funnel is receivable in the first cylinder. A flexible tube is connected between the tubular portion of the funnel and the pipe. A bottle includes a nipple. Tear gas will exit from the bottle through the nipple if the nipple is pressed. The bottle is receivable in the first cylinder while the nipple is insertable in the conical portion of the funnel. A first bottle-driving element includes a piston and two plates projecting from the piston. Each of the plates of the first bottle-driving element includes an inclined edge. The first bottle-driving element is receivable in the first cylinder so that the piston thereof is in contact with the bottle.