An electronic device comprises a battery and a monitoring device, and the monitoring device comprises a photoelectric conversion device and a recording module. When the battery is disassembled, the photoelectric conversion device converts the illumination into an electric signal, the recording module generates a first digital signal according to the electric signal, and a processor reads the firstdigital signal and instructs a display screen to display prompt information, or start a battery protection mode or shut down. According to the electronic device, under the condition that the batteryis disassembled, the limiting or protection is carried out, and the potential safety hazards of the battery are reduced.