Abstract: The fuzzy control technique was applied to the dynamic control process of reheating furnace temperature with the data input from the mechanism modeling to track the change in the temperature of all blooms in the furnace, thus building a fuzzy controller with feedforward modification. The controller not only took the output deviations and their change rates of the controlling points in the present zone as the frame of reference to fuzzy decision but took those in the backing zone as the feedforward input so as to enable the furnace temperature decision to get an advance function. The output fluctuation of the furnace and the fuzzy decision system for unscheduled workpieces to roll out were simulated. The results showed that the approach proposed is adaptable to the dynamic characteristics in reheating furnace with excellent controllability.