Gallstone surgery usually does not require a catheter, depending on the situation. Gallstone surgery under general anesthesia requires a urinary catheter. The procedure is longer and the anesthesia requires a urinary catheter to be excreted. Nowadays, minimally invasive techniques are particularly good and generally do not require a urinary catheter. The need for a urinary catheter may be due to anesthesia, age, physical condition, long surgery time, metabolism can not be excreted, consider the need for a urinary catheter, can be completed without a urinary catheter. It has a lot to do with the anesthesia method, very early on it was done under epidural anesthesia, with the development of technology into the minimally invasive era, laparoscopic surgery gradually replaced the conventional open surgery. The biggest requirement for laparoscopic surgery is general anesthesia in order to establish a pneumoperitoneum, using general anesthesia, considering that the operating time will be long enough to insert a urinary catheter, which is generally not necessary.