It is suitable for high-temperature sterilization of oral liquid, meat products, canned food, beverages, medicines, etc., and is used for vacuum testing and testing after filling, locking and sterilization. The sterilization pot is a cylindrical sterilization using compressed air as counter-pressure, and the canned materials can be quickly cooled after sterilization in the pot and counter-pressure with compressed air is used to prevent the glass bottle from breaking, jumping cap and loosening.