Abstract: In order to obtain the optimal technology condition of magnetic solid base catalyst preparation. Design catalyst precursor mole ratio, reaction time, calcination time, calcination temperature three-level four-factor box—behnken experiment, Through the reducing polyethylene terephthalate yield from catalytic BHET was used as the response values for characterization of the catalyst, and research the optimal technology condition of reducing process. Result show that the response surface method was applied to determine the optimal technology condition of magnetic solid base catalyst preparation, it was highly significant（P< 0.0001）the quadratic regression mathematics model established according to experimental date. The optimal technology condition of magnetic solid base catalyst preparation was by following :the catalyst precursor mole ratio 1:3.94,the reaction time was 1.67h, the catalyst calcination time was 2.01h,the calcination temperature was 600℃.The condition of catalytic reducing process optimization was: the reaction temperature was 195℃, the reaction time was 4h,the catalyst dosage was 2.0%.The catalyst was characterized through the XRD,BET and SEM. Moreover through the IR and MS characterization methods confirmed that the reducing products was BHET.