Abstract: An intelligent locking system and a working method thereof. The intelligent locking system includes a lock (1), an unlock device (2) and a logic generation device (3). The logic generation device (3) comprises a logic generation module and a logic communication module. The logic generation module generates a logic for recognizing the identity and the state of the lock, and the logic is send to the unlock device (2) by the logic communication module. The lock (1) comprises a lock tongue (102), a lock head (106) and an identity and state converting module (104). The unlock device (2) comprises an unlock module for starting up the lock head to move, an identity recognizing module (201) and a communication module.