The invention relates to a pot calciner, in particular to a pot calciner flue temperature automatic control system. The pot calciner flue temperature automatic control system comprises bottom layer local control systems and an upper layer central control system. Each pot calciner in a calcinating workshop is provided with one local control system. The local control systems are connected to the upper layer central control system through a network communication system, so that unified management and control over the bottom layer systems are achieved. The pot calciner flue temperature automatic control system has the advantages and effects that temperature distribution of all flues of each pot calciner in the calcinating workshop is precisely controlled, and further, and unified management for all detection and control data of the whole workshop can be achieved; and the system can be used for replacing manual temperature regulation, decreasing the manpower quota and improving the pot calciner production stability and product quality uniformity, furthermore, fluctuations of flue temperatures within target ranges can be precisely controlled, the overheating phenomenon is prevented, and the service lives of the pot calciners are greatly prolonged.