The sudden power failure of the gym swimming pool has an impact. The swimming pool can't swim due to power failure, and insufficient lighting will affect the lifeguards' observation of underwater conditions, which will lead to swimmers' failure to find and rescue accidents in time. The swimming pool is an indoor place, covered by a roof and an external wall. There is not enough sunlight that can enter the room through the window. Artificial lighting is needed as an auxiliary lighting facility to ensure that the indoor brightness meets the requirements of safety observation. In the case of power failure, it is reasonable and safe for museums to ban swimming without backup power supply.