Abstract: Investigates the online optimization design including the pre-calculation and the online adaptation of rolling deformation schedule on hot plate mill.Based on the mathematical model,divids the optimization design of rolling deformation schedule into two processes: the loading passes and the shaping passes.Puts forward a linear programming model for the shaping passes and the corresponding simplex algorithm.Analyzes the effect of different constraint equations on the optimal schedule and performs simulation.Then determines the optimal constraint equations and carries out the model adaptation and online schedule modification through measured values during the rolling process.The application on several hot plate mills shows that the design save the rolling time as well as obtain good shape,the thickness difference between plates of more than 95% products are in the range of 0.1?mm,and the yield is increased by 0.5%.