The invention relates to a quick-release lock. The quick-release lock comprises a lock body, a lock cover, a lock piece, a locking latch and a switch, wherein the lock piece is used for being connected with a strap, the lock body is used for being connected with a parachute harness, and the lock cover is mounted on the lock body through a lock cover shaft; the locking latch and the switch are arranged in the lock body, the locking latch is mounted in the lock body through a locking latch shaft, and the switch is mounted in the lock body through a switch shaft; the locking latch is provided with a hook part and a linkage part, the switch is provided with a lever part and a crossbeam part, and the end of the lock piece is provided with a bayonet matched with the hook part; the lever part levers the linkage part when the lever part rotates to allow the locking latch to rotate, the hook part is separated from the bayonet, and the linkage part pushes the lock piece out of the lock body during rotation. The quick-release lock has the advantages that the features of a seawater quick-release device and a mechanical quick-release lock are combined, a parachuter can be reliably separated from a parachute harness system when landing on the ground or in the sea, the safety of the parachuter is guaranteed, and lifesaving successful probability is increased.