Abstract: In order to study the strip tension of the dancer roll in the continuous annealing process,the mechanism model and the state space expression of the strip tension are established.Two shortcomings of the existing tension models are solved in these new models.Based on the actual control system,the control simulation program is developed.The closedloop control simulation software of the strip tension,which consists of the model simulation program of the strip tension and the control simulation program,is established.Simulation experiments are performed,and the experiment results show that the simulation software can timely and accurately simulate the state and dynamical characteristics of the strip tension.