Abstract:In order to to study the influence of slice thickness，microwave power and loadage on the microwave drying characteristics and dynamic model of balsam pear，the single factor experiment was investigated.Results showed that microwave power had the greatest influence on the dryness of balsam pear，followed by loadage，and finally the thickness.Balsam pear drying had acceleration and reduction stages.The results of comparing the values of the correlation coefficient（R2），residual sum of squares（RSS）and reduced chi-square（χ2）showed that tian model was the best one to describe the relationship of moisture content and drying time during microwave drying，and the coefficient was above 0.99.