Before cholecystectomy surgery, you should pay attention to the strict fasting 12 hours before surgery, prohibit smoking, and carry out all routine examinations. 1. Strict fasting 12 hours before surgery: cholecystectomy patients are not allowed to eat 12 hours before surgery, and they are not allowed to drink water before 6 hours, which is to prevent choking or aspiration pneumonia caused by vomiting during the surgery. 2. No Smoking: Smoking is also not allowed before the surgery because it will irritate the throat area and cause excessive secretion. When there is too much secretion in the body, it will easily block the airway during the operation. 3. Routine tests: Routine tests before surgery are essential, such as liver and gallbladder ultrasound, liver function tests, blood tests, etc. These tests can directly understand whether the patient is a good candidate for the surgery or not. These tests can directly understand whether the patient has any serious complications, and secondly, for patients with long-term constipation, enemas are also necessary to clean up the intestinal tract. Before cholecystectomy surgery patients must follow the doctor’s instructions, otherwise it is easy to abnormalities during the operation, which need to be remembered.