The explosion-proof sound and light alarm is a sound and light alarm device installed on site. When a fire occurs on site or the equipment monitoring status is abnormal and confirmed, the sound and light alarm installed on site is activated by the alarm controller of the explosion-proof control center, and sends out a strong sound and light alarm signal to remind the on-site personnel to pay attention. The sound chip is amplified by the triode and transformer to drive the speaker to make a sound; the timing circuit is used to control the ultra-bright light emitting diode to emit a flashing light signal.