Abstract: Based on dynamic programming, stochastic optimal control theories and adaptive algorithm, some research work on the computer control system for a hot strip finishing mills is described in this paper, which mainly includes the optimum roiling schedules of strip rolling mills and the optimal calculation of allocating thickness in three .rolling mills on one process line, the adaptive method of rolling schedules, and the improved formulating of automatic gauge control (AGC). The thickness control quality of the hot strip mills has been improved remarkably. The application shows that the thickness variation in length of strip is less than 0.08mm and the precision hitting the thickness target is in ±0.1mm.