1. Fast and evenly. It no need heat exchange. The microwave dryer can pass the food immediately. The wave can changed to be heat within several seconds. Immediately, Microwave dryer has the selective character which can heat the food more evenly. 2. High effciency. As the microwave dryer can be absorbed easily by the materials which contain moisture, there is very few wave wasted. Compared with the traditionalultrared rays heating ways, it will save energy at least 30%. 3. Keeping fresh. The Sterilization is with lower temp, so the nutritions of food can be protected well. 4. Easy to control. The microwave only need water and electricity, can be controlled easily. So it can be used to dry the food continuously to save labor.