When is the most appropriate time to do laparoscopic surgery should be objectively analyzed according to the different conditions of patients. For patients with infectious lesions, it is recommended that the surgical operation should be performed three months after the infection has not occurred or the infection has been completely controlled. For example, in patients with gallbladder stones, if the operation is performed as early as possible before acute inflammation of the gallbladder occurs after the discovery of stones, the tissue edema is lighter, bleeding is less, the operation time is shorter, and the probability of biliary fistula, bleeding and infection at the postoperative trauma is significantly reduced. Second, tumor lesions, once diagnosed, should be operated for a limited time, such as gastric malignant tumor, gastroscopy found tumor lesions should be hospitalized immediately, at this time the tumor does not cause the surrounding liver, colon, vascular invasion, surgical removal can achieve a better radical effect, once the tumor caused tissue invasion, the probability of recurrence after surgery is very high.