A fluidized drying method was used to research the drying characteristic of zymotic orange peels, and a experimental equipment of fluidized drying bed was built, the influence to the drying characteristic of drying parameters such as air temperature,air velocity, particle diameters, the height of bed layer and the initial moisture content etc, are analyzed. The results indicate that the fluidized drying method is suited to the sample with high moisture content after preprocess, and among the drying parameters, the initial moisture content, air temperature and particle diameter influenced the drying characteristic remarkably. Based on the experiential data, an experiential mathematical model is buildt up, which can provide the direction for real production in the fluidized bed.