The electrosurgical unit is a surgical needle used for cutting skin and flesh, and at the same time it can automatically sterilize the wound. It is a multifunctional system that meets the requirements of all operating rooms. It consists of a generator and a handpiece with one or more electrodes, and uses a switch on the mobile phone or a foot switch to control the device. It can quickly and automatically adjust the current to adapt to changing working conditions. And the electrosurgical unit can be used in unipolar or bipolar mode. The special mode can perform laparoscopy and endoscopy under difficult conditions.