According to the way of “seeing in the difference procedures, the min imally invasive techniques can be divided into two classifications and three kin ds. So far, the minimally invasive procedures mainly include endoscopic, laparos copic, interventional radiologic and interventional ultrasounic techniques, as w ell as approaches of minimally invasive open surgery. In the future, there will be three kinds of directions, which are the improvement of the existing procedur es, the unitization of the different minimally invasive techniques and the inven tion of brand-new minimally invasive procedures.