Anti-dismounting electronic device

Provided is an anti-dismounting electronic device which comprises a battery and a circuit board. The battery comprises a first electrode and a second electrode. The circuit board comprises a first contact and a second contact. The first contact is electrically connected with the first electrode of the battery. The second contact is electrically connected with the second electrode of the battery. The circuit board comprises a third contact, a fourth contact and a discrimination circuit. The discrimination circuit is electrically connected with the fourth contact and used for discriminating whether the fourth contact is electrically connected with the third contact. The electronic device further comprises a metal sheet which comprises a fifth contact, a sixth contact and a seventh contact. The fifth contact is electrically connected with the second contact of the circuit board. The sixth contact is abutted against the third contact of the circuit board. The seventh contact is abutted against the fourth contact of the circuit board. In the embodiment, a simpler anti-dismounting design is provided by the metal sheet.