High-frequency electrotome and laser scalpel use high temperature to cauterize body tissues to achieve the purpose of cutting and stopping bleeding. Because of burning, smoke and odor will inevitably be produced, but the microwave scalpel can overcome this shortcoming. The power of the microwave generator used in the scalpel is150 W. When the power reaches more than 70 W, the tissue on both sides of the blade heats up rapidly, exceeding 60 degrees. The power can be adjusted at any time according to the needs of surgery. During the operation, the slices were neat and clean, without eschar, smoke and smell of burning biological tissues. Commonly used in general surgery, liver surgery, cardiothoracic surgery, etc.