The microwave drying characteristics of arrowhead slices was researched, and the drying kinetics model was established on the basis of effects of thickness, lay density and microwave power on the microwave drying characteristics of arrowhead were studied. The results show that the microwave drying process of arrowhead slices is mainly characterized by accelerated drying and deceleration, but when the power density was low, the drying rate appeared a constant stage. The greater the thickness and density were, the smaller the change of drying rate it was. The slower the reduction of moisture content was, and the longer drying time it was. The higher the microwave power density was. The higher the change of drying rate was, the faster the moisture content decreases it was, and the shorter the drying timeit it was. The microwave drying process of arrowhead slices was fitted with Page model, and the predicted values of the model and the experimental values were almost unanimously (R²=0.990 66).