Urine bilirubin 1 + indicates a positive reaction of urine bilirubin, but only an indicator can not explain the problem, it may be physiological or pathological, it is recommended to further identify the causes. 1. physiological: for example, drinking too little water, caused by the concentration of urine, the concentration of various components in the urine content has increased, may cause a slight increase in false-positive phenomenon. 2. Pathological: such as gallstones, cholangiocarcinoma, primary biliary cirrhosis, hepatocellular jaundice, acute jaundice hepatitis, viral hepatitis, cirrhosis, etc., as well as hemolytic diseases, such as congenital hyperbilirubinemia, may cause elevated urinary bilirubin. This index alone is not enough to diagnose, there may be other factors, combined with other systemic examination comprehensive analysis, we recommend that the patient to further identify the causes.