soybean drying and insect killing is carried out by using microwave to make the heated object (soybean) itself become a heating body, so it can achieve uniform heating in a short time. Microwave for industrial / agricultural applications is a high-tech that uses high-frequency oscillating molecular motion as energy. It is widely used in heating, drying and low-temperature sterilization in food / agricultural products industry; Powder drying and catalytic reaction in chemical industry; Low temperature vacuum microwave drying and sterilization in the pharmaceutical industry; Fast low-temperature drying and shaping of solid wood in the real wood furniture and musical instrument industry. Microwave equipment can be used for many non-metallic products that cannot penetrate the inside of materials in conventional heating and need heat sources.