An intelligent electronic door lock comprises a lock barrel, a lock bladder and a key. A mechanical pin tumbler is arranged inside the lock hole of the lock barrel, and a key hole is arranged on the lock bladder. The intelligent electronic door lock also comprises a control unit, a power supply, a button switch and an electrically-controlled pin tumbler. The control unit is connected with a key code reading module and a storage module, the electrically-controlled pin tumbler is arranged inside the lock hole of the lock barrel, and a groove is arranged on the side surface of the lock bladder; a digital chip is arranged inside the key; and when the key is inserted into the key hole and the control unit is powered on, if the codes are the same, the key can normally unlock, otherwise, the lock is locked. The intelligent electronic door lock combines the advantages of the mechanical lock and the electronic lock, adopts the power-on manner that can ensure operation of the electronic door lock with low electricity consumption, can be powered by a battery, and has long service life. The intelligent electronic door lock has wider application range, and can be conveniently installed in various houses, buildings and household places to replace the original lock. Users can conveniently use the electronic door lock without changing the original habits of use.