A slow turn-back of the food inside it makes the heat conduction more rapid and even so as to reduce the sterilization time, which makes the sterilization management of high temperature and short time possible, avoiding overheat around the food. The temperature controller can automatically adjust according to the character of various packages. The pressure control system can make counter pressure adjustment complying with the different situation, which is beneficial to prevent the deformation and damage and to increase the percent of turn off. Meantime, through the check an analysis of the record curve of T-t and P-t, there will be an efficient production and quality management.