There is a line in the hit American movie “Pacific Rim”: injecting carbon dioxide into the brain cavity of a monster is like a surgeon performing laparoscopic surgery. Conventional laparoscopy requires the use of carbon dioxide to establish a pneumoperitoneum in order to create a surgical operating space. The stimulation of the septal nerve after intra-abdominal inflation can cause postoperative shoulder and back pain in patients, and the pressure of the pneumoperitoneum affects the blood flow to the lower extremities, which increases the risk of lower extremity thrombosis or pulmonary embolism in patients of advanced age, with thrombosis and cardiovascular disease, which is uncommon but not rare and sometimes fatal for patients. The suspended pneumoperitoneum-free laparoscopic surgery eliminates the impact of intraoperative establishment of pneumoperitoneum on human circulatory system and eliminates postoperative shoulder and back discomfort, which is especially suitable for laparoscopic surgery with long operation time or elderly people.