Diarrhea after gallstone surgery is a normal phenomenon, which may be due to bile excretion disorder, gastrointestinal dysfunction after anesthesia or weak fat digestion after surgery. 1. Bile excretion disorders: gallstone surgery may cause bile disorders due to the stimulation of the bile duct and gallbladder, which can be treated with oral ursodeoxycholic acid. 2. Gastrointestinal dysfunction after anesthesia: gallstone surgery is usually general anesthesia surgery, which will affect the patient’s digestive function, resulting in diarrhea, which usually does not need treatment, the body will regulate itself. 3. Fat digestion ability is weak: after the removal of the gallbladder, some patients in the postoperative fat digestion ability to weaken the phenomenon, may cause diarrhea, is a normal physiological phenomenon, usually in the postoperative recovery process will be relieved. After gallstones surgery, diarrhea should be promptly go to the hospital to find out the cause of the disease after the relevant treatment.