Gastric and colorectal cancers are common malignant tumors, and surgery is still the most effective treatment method. However, traditional open surgery is highly traumatic, with slow postoperative recovery, obvious pain and more comorbidities. Therefore, minimally invasive surgery for gastrointestinal diseases has been the unremitting pursuit of gastrointestinal surgeons. Compared with traditional open surgery, laparoscopic radical tumor cure has the advantages of less intraoperative bleeding, clear vision, smaller incision, less postoperative pain, faster recovery of gastrointestinal function, shorter hospitalization time, and less influence on immune function of patient’s organism, which is beneficial to patient’s postoperative recovery. However, radical tumor resection under laparoscopy is still a difficult task for general surgeons because of its anatomical relationship, difficulty in resection and suturing, and high skill requirements. It is a hot issue in the clinical research of gastrointestinal surgery because there are few units and reported cases in China and abroad.