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Based on investigation of glass laminating and vacuumizing, it shows that the temperature control method which is in use is too simple to get a better result. This method causes overshoot, shock and so on. So design a more accurate method called temperature control of autoclave based on model reference adaptive system and PID control to deal with those problems above. Frist, it will model the temperature of autoclave with the experimental datas. And then set the parameters of PID control by the temperature models. Next the parameters can be adjusted on line based on the model reference adaptive system(MRAS). That makes up deficiency of classical PID control and use the advantages of PID. From the simulation, it shows that the method can reduce the overshoot and improve dynamical property.