The wound healing process after minimally invasive surgery is the same as that of traditional open surgical incisions, and the healing process includes the exudative phase, cell proliferation phase and scar formation phase. 1. Exudative phase: In the early postoperative period, there is local tissue necrosis in the wound, a small amount of bleeding and oozing may occur, and an inflammatory reaction occurs within a few hours, which is manifested as congestion at the edge of the wound, local redness and swelling, and so on. 2. Cell proliferation period: 2~3 days after the operation, fibroblasts gradually increase, the wound starts to heal and shrink slowly, and the cut surface gradually becomes dry. 3. Scar formation period: from about the third day, the wound starts to grow granulation tissue, the surface starts to crust, and collagen fibers are produced in the 5th~6th day, and then the collagen fibers are gradually transformed into scar tissue and the wound tends to heal. Minimally invasive surgery has smaller scars and is more aesthetically pleasing due to smaller incisions than traditional open surgery.