The phenomenon of yellow urine can occur when taking furazolidone tablets, which is a normal metabolic condition of the drug. Furazolidone belongs to the furan class of antibiotics, after taking the drug orally, most of the original form of the drug is excreted from the urine, so it can play the role of inhibiting the reproduction of bacteria in the urinary tract and controlling urinary tract infections, then the phenomenon of yellow urine will appear, not a disease condition, belongs to a normal drug metabolism. The patient does not need to worry, during the medication to maintain a certain amount of water, in principle, to drink more than 2500ml per day, and the infection is effectively controlled after the early discontinuation of the drug, then the yellow urine can be improved. The yellowing of urine can occur after a variety of clinical antibiotics are taken orally, such as sulfonamide antibiotics can also appear yellow urine after taking them orally, and multivitamins can also appear yellow urine after taking them orally. These are normal drug staining phenomena, not a disease condition.