The utility model discloses an intelligent passive electronic lock. The lock comprises a lock body, a key hole formed in the bottom of the lock body, a lock hook, a locking mechanism and a circuit board. The lock hook is movably installed on the lock body. A lock hook groove is formed in one end or two ends of the lock hook; the locking mechanism is arranged in the lock body; the locking device comprises a locking ball, a locking sliding block, a mechanical element and an electromagnet, the locking ball is matched with the lock hook groove; the locking sliding block is located on one side of the locking beads or between the two locking beads and pushes the locking beads to enter or exit from the lock hook groove through vertical movement, the mechanical element is located below the lockingsliding block and used for pushing the locking sliding block to move vertically, and the electromagnet is arranged on the right side of the mechanical element and drives the mechanical element to move. The circuit board is electrically connected with the electromagnet and used for controlling the electromagnet to act. The intelligent passive electronic lock is similar to a common mechanical lockin appearance, small in size and capable of directly replacing the common mechanical lock to be directly hung. And due to the passive design, maintenance by professionals is not needed.