The utility model provides an electronic password key box comprising a box body and a box cover, wherein, an electromagnet component, an electromagnet slide plate, a switch assembly, a switch stirring plate, a magnet insert plate, a large slide plate, a buckle plate, an insert plate tension spring, a tension spring and a lock catch are arranged in the box body; the electromagnet component is connected with the electromagnet slide plate; the magnet insert plate is arranged beside the electromagnet slide plate; the magnet insert plate is connected with the insert plate tension spring; the large slide plate is connected with the tension spring; the magnet insert plate and the buckle plate are movably arranged on the large slide plate; the large slide plate is connected with the switch stirring plate; the switch stirring plate is riveted with a switch; and a key component capable of stirring the switch stirring plate is arranged beside the switch stirring plate. The utility model has the following advantages: (1). both an electronic keyword and a lock key cab be used for opening the key box, thereby not only improving practicability of the key box, but also bring more conveniences to users; (2). keyword reset can be performed at any moment, thereby improving the security and the reliability of the key box; and (3). despite power down, the keyword can be permanently kept in the circuit, and another keyword can be established as an alternative to the original one, thereby facilitating memorization.