Safe high-pressure sterilizer

The invention discloses a safe high-pressure sterilizer, and belongs to the technical field of high-pressure sterilizers. The safe high-pressure sterilizer comprises a tank body and an upper cover, wherein an inner container is connected to the interior of the tank body; a drainage pipe is fixedly connected to the lower end of one side of the tank body; a rotating bolt is rotationally connected tothe upper end of the side, close to the drainage pipe, of the tank body; a first sealing plate is fixedly connected to the inner side of the rotating bolt; a connecting rod is rotationally connectedto the end, far away from the rotating bolt, of the first sealing plate; and a moving rod is rotationally connected to the other end of the connecting rod. Through the arrangement of a damping spring,parts in the sterilizer are prevented from being damaged due to vibration in a transportation process, and the stability of the sterilizer is improved; and through the arrangement of a cooling concentric-square-shaped pipe, th