Laparoscopic technique is most suitable for treating some benign diseases and early tumors, such as fenestration of hepatic cyst, resection of colorectal tumor, repair of esophageal hiatus hernia, gastric plication, repair of external hernia, resection of gastric leiomyoma, repair of gastrointestinal perforation, and release of adhesive intestinal obstruction. In addition, it can also be used for minimally invasive treatment of diseases such as thyroid, breast, varicose veins of lower limbs, splenectomy of hypersplenism caused by various reasons, and the effect is remarkable.