The most feared complications after laparoscopic surgery are serious postoperative complications, such as large vessel injury and visceral injury, which can be life-threatening if not detected in time and treated accordingly. Complications after laparoscopic surgery include carbon dioxide pneumoperitoneum-related complications, vascular injury, and visceral injury. 1. Carbon dioxide pneumoperitoneum-related complications are usually caused by a certain degree of influence on cardiopulmonary function after carbon dioxide pneumoperitoneum is established. For example, diaphragm uplift, decreased lung compliance, decreased cardiac excretion of blood, and so on, and the resulting subcutaneous emphysema, pneumothorax, gas embolism, cardiac arrhythmia, thrombosis, body temperature drop, etc.. 2. Vascular injuries can be divided into two categories: the first category is retroperitoneal large vessel injury, mainly caused by violent puncture, such as the abdominal aorta, inferior vena cava, iliac artery, portal vein, etc. This type of injury rarely occurs, but the mortality rate is very high after the occurrence of this type of injury. The second category is the abdominal wall, mesenteric and omental vessels. 3. Visceral injuries are not uncommon and can lead to serious consequences after surgery if they are not detected during surgery. If the cavity organs are injured, it can lead to peritonitis, such as the bile duct, small intestine, colon, stomach, ureter, bladder and so on. Injury to parenchymal organs can lead to hemorrhage, such as the liver, spleen, kidneys, and uterus.