Abstract: On the basis of having studied the characteristic of JN43' coke oven, Generalized predicative control algorithm has been designed for coke oven heating control system, by using of direct algorithm, calculate work on line is reduced. the control algorithm preferably settled down the fluctuation of flue temperature due to some factors,like as the amount of coal, coking period, the moisture in compound coal and so on. the results show that the fluctuation of flue temperature reduced from ±10℃ to ±5℃, and annual average economized BFG capacity for 1 032 m3, the energy saving is 3.1%.