Microwave heating and conventional heating method is very different compared to traditional heating methods rely on heat, through radiation, conduction, convection and other means, first of all the heated surfaces, and then by heat conduction, so that the internal temperature outside to the inside gradually increased. Most of the objects within the heat transfer is very slow, such as general material, so to take a long time to heat the whole body. Also likely to cause uneven heating of the object, affecting the quality of the heating body, and even change the color of heated objects, nutritional composition and physical and chemical properties, and microwave heating has a unique way - the overall heating of materials, so microwave heating has the following advantages: 1 , penetrating heating, fast heating, uniform heating. 2, selective heating, energy efficient. 3, no thermal inertia, which has real time. 4, convenient operation, suitable control. 5, environmental protection, sanitation and hygiene. 6, safe.