The invention provides an intelligent electronic lock. The lock comprises a lock cylinder, a lock bulb, a key, a control unit, a power supply, a key switch and an electric control billiard, wherein a mechanical billiard is arranged in a lockhole of the lock cylinder; the lock bulb is provided with a key hole; the control unit is connected with a key code reading module and a storage module; the electric control billiard is arranged in the lockhole of the lock cylinder; a groove is reserved on the lateral surface of the lock bulb; a digital chip is arranged in the key; and when the key is inserted into the lockhole and the control unit is electrified, the key can unlock the lock normally if codes are the same, and the key cannot unlock the lock if information of codes is different. The lock combines the advantages of a mechanical lock structure and an electronic structure, can ensure low electricity consumption working of the electronic lock by adopting an electrifying mode, can use batteries to supply electricity, and can ensure service life. Therefore, the lock has wide application range, and can be arranged in various houses, buildings and household places conveniently to replace conventional locks. Users can use the lock conveniently without changing existing habits.