Laparoscopic surgery varies depending on the site and the size of the surgery, with short ones taking about 20 minutes and long ones that may take 4-5 hours or even 7-8 hours. For example, laparoscopic appendectomy is usually done in about half an hour; laparoscopic cholecystectomy is about 30-40 minutes;. If laparoscopic choledochotomy for stone extraction, it may take slightly longer, about 1 hour. It depends on the time of choledochoscopy to remove stones, if the stones are easier to remove the time should be shorter; if the time to remove stones is long, the operation time may also be on the long side. Laparoscopic radical surgery for colorectal cancer takes about 2 hours; laparoscopic radical surgery for gastric cancer takes about 3 hours. So the bigger the surgery, the longer it will definitely be.