In the 21st century, minimally invasive has become an important development direction of surgery. Laparoscopic cholecystectomy has long become the “gold standard” surgery, while laparoscopic radical tumor surgery has lagged behind because of its complicated operation and high technical requirements. In recent years, with the maturity of laparoscopic technology, accumulation of experience, optimization of process and continuous progress of new surgical instruments such as ultrasonic knife, laparoscopic radical surgery of stomach, colorectal and other gastrointestinal tumors has been gradually promoted in major hospitals. Compared with open surgery, the advantages of laparoscopic surgery are less bleeding, less trauma, less pain, quick recovery of gastrointestinal function after surgery, and significantly shorter hospitalization time for patients. Compared to open surgery with an incision of about 15-20 cm, laparoscopic surgery requires only a 4-6 cm long incision to remove the surgically resected specimen. A large body of evidence shows that the margins and number of lymph nodes obtained during laparoscopic radical tumor treatment are not statistically different from those of open surgery, and studies such as CCLOR and CLASICC have demonstrated in randomized controlled trials that there is no statistical difference in the long-term outcomes of laparoscopic versus open surgery, including overall survival, tumor-free survival, and local recurrence rates, and are therefore recognized by the NCCN (National Comprehensive Cancer Network) guidelines. The NCCN (National Comprehensive Cancer Network) guidelines endorse and recommend laparoscopic surgery. Laparoscopic surgery is mainly suitable for early to mid-stage tumors, but not for the following cases: (i) tumors larger than 150 px in diameter or extensive infiltration with surrounding tissues; (ii) severe intra-abdominal adhesions or acute intestinal obstruction affecting intra-abdominal exposure after multiple surgeries; (iii) abnormal bleeding diseases and states; (iv) severe cardiopulmonary abnormalities that cannot tolerate surgery. In recent years, based on the standardized implementation of radical gastrointestinal tumor surgery, our department introduced the latest generation of Karl Storz high-definition laparoscope in 2011, and with the technical reserve of a large number of open surgeries, laparoscopic surgery was soon carried out. So far, more than 100 cases of laparoscopic-assisted radical colorectal cancer surgery have been completed, with no case of conversion to open surgery, no case of serious postoperative complications, no more than 100ml of bleeding during surgery, and patients recovering quickly after surgery, with significantly shorter time of ventilation, getting out of bed and hospitalization. This marks the maturity of laparoscopic surgery technology in our department and the comprehensive entry of radical surgery of gastrointestinal tumor into the era of minimally invasive.