The utility model provides a pronunciation light suggestion transformer substation hyperbaric chamber inter space electric system, at each spaced entrance in hyperbaric chamber installation induction system, each induction system connects audible -visual annunciator respectively, audible -visual annunciator includes power, voice prompt, bulb, voice prompt and the parallelly connected back of bulb, and power and induction system again establish ties. Adopt the utility model discloses, open the high voltage compartment when someone and separate and just to send pronunciation when dolly switch or switch cabinet doors get into electrified interval and report to the police with light and remind the staff, prevent the incident emergence.