Gallstones are a condition in which stones develop in the gallbladder or bile ducts. Gallbladder stones usually do not cause yellowing of the urine, while bile duct stones can cause yellowing of the urine in severe cases. 1. Gallbladder stones: gallbladder stones generally do not cause yellow urine, the larger gallbladder stones if the pressure on the common bile duct to bile drainage, may cause yellow urine, most patients with gallbladder stones do not have obvious clinical symptoms, some of which can be manifested as abdominal pain, does not cause yellow urine. 2. Bile duct stones: bile duct stones can be divided into intrahepatic bile duct stones and extrahepatic bile duct stones. When intrahepatic bile duct stones block the bile ducts, especially the larger bile ducts, such as the common bile duct, the left or right hepatic duct, resulting in poor bile drainage, it can cause yellowing of the patient’s skin and sclera; also abdominal pain, fever and other symptoms. If the patient has yellow urine, it is recommended to go to the hospital as soon as possible.