The purpose of minimally invasive surgery is to achieve the best possible treatment results with the least possible trauma, so the efficacy of surgery is always the most important purpose of minimally invasive surgery. Although aided by highly sophisticated instruments, too small an incision makes the anatomy unclear, the operation not in place, the action too rough, the field of vision not clear, and the artificially caused difficulty in operation, prolonging the operation. Artificially caused by the operation is difficult, prolonging the operation time, accidental injury to important tissues, and even in the conversion to traditional surgery, but become invasive or giant invasive surgery, which will bring serious injury, and even life-threatening. 2, small incision surgery is not the same as minimally invasive techniques: simply reduce the incision, exposure is not sufficient, the use of conventional surgical instruments, the operation is difficult to handle, strong pulling artificially increase tissue damage does not mean that the operation is minimally invasive. 3, in order to achieve the purpose of minimally invasive, prolong the operation time, disturb the stability of the internal environment of the body, resulting in increased surgical trauma, causing other serious complications and aggravating clinical symptoms, which is also not the original purpose of minimally invasive surgery, small incision minimally invasive surgery must be based on the doctor’s experience and existing conditions, through a smaller incision than conventional surgery to achieve the purpose of treating diseases, reducing trauma to patients and achieving aesthetics.