With the accumulation of experience in laparoscopic resection of gastric and colorectal cancers and the improvement of laparoscopic instrumentation, the application of laparoscopy in the field of gastric and colorectal surgery has continued to develop and deepen, especially making a milestone progress in colorectal surgery. Laparoscopic radical resection of colorectal cancer not only achieves the same curative standard as open surgery, but also has many advantages over traditional open surgery as shown in several randomized controlled trials. Early stage gastric cancer is the best indication for laparoscopic radical gastric cancer surgery because it has few lymph node metastases and low detection rate of cancer cells shed in the abdominal cavity. Nowadays, laparoscopic D2 radical surgery for progressive gastric cancer is gradually increasing, and good results have been achieved. Laparoscopic radical treatment of abdominal tumors avoids the problem of prolonged exposure of abdominal organs to air during open surgery, and the operation is basically completed within the closed abdominal cavity, which reduces the exudation and loss of body fluids and maintains the stability of the intra-abdominal environment, while the abdominal organs are less disturbed. The advantages of minimally invasive surgery, such as good quality of life and low impact on the immune function of the body, are obvious, and laparoscopic radical abdominal tumor treatment is gradually carried out and developed at home and abroad. The anatomical procedure of laparoscopic radical surgery not only follows the principles of radical tumor surgery, but also the level of surgical separation in laparoscopic radical surgery is exactly the same as that in open surgery. Due to the magnification of the laparoscope, the vascular dissection is completely skeletal, thus surpassing even open surgery in terms of completeness of surgical resection. Laparoscopic surgery modalities such as total laparoscopic, laparoscopic-assisted and hand-assisted laparoscopic surgery are all used for laparoscopic-assisted tumor resection with small surgical incisions and short operative times.