Lock with acousto-optic prompt function

The utility model discloses a lock with an acousto-optic prompt function, comprising a lock body (1). A lock hole (2) is arranged on the surface of the lock body (1), and a key (3) is matched with the lock hole (2). The lock with the acousto-optic prompt function is characterized in that a lighting lamp (4) is arranged on the lock body (1) above the lock hole (2), a loudspeaker (5) is also arranged on the lock body (1), the lighting lamp (4) and the loudspeaker (5) are controlled through a control circuit (6) arranged in the lock body (1), and a signal transmitting device (7) is arranged in the key (3). The lock with the acousto-optic prompt function has a simple structure and a skillful design, and people can quickly find the lock hole and unlock the lock.