The invention relates to a method for enhancing salt cavern storage utilization rates by utilizing connected wells to discharge brine from the bottom of a cavity. The method is to place an electric submersible pump and other underground equipment through existing salt wells or new salt wells during the gas injection or oil injection and brine discharging of salt cavern storages, so that the brineat the bottom of a cavity can be discharged. The method can be applied to the gas injection or oil injection and brine discharging of various salt cavern storages, especially suitable for the gas injection or oil injection and brine discharging of well and rock salt connected well sets; and the method can increase the effective volumes of salt caverns to store gas or oil, and therefore, the cavityutilization rates of the salt cavern storages can be enhanced.