Urinary bilirubin 1+, total bilirubin normal can be seen in bile excretion obstruction, post-transfusion reaction. Bilirubin is a metabolic product of aging red blood cells, divided into direct and indirect bilirubin, is an important indicator of liver and bile function, can accurately reflect the degree of jaundice, and is important for clinical diagnosis of hidden jaundice. Indirect bilirubin is insoluble in water, and in the liver, it combines with glucuronic acid to form direct bilirubin, which is soluble in water. In normal people, direct bilirubin is excreted into the intestine with bile, which in turn oxidizes to urobilinogen, and urinary urobilirubin should be negative in the urine. When suffering from gallstones, bile duct tumors, pancreatic head cancer and other diseases, due to the existence of bile duct obstruction, bile excretion is not smooth, part of the reflux liver into the blood, and then with the blood circulation in the kidneys to discharge, you can test positive urine bilirubin. In addition, when there is strenuous exercise, post-transfusion reaction or extensive burns, urinary bilirubin 1+ and total bilirubin is normal, it is recommended to consult a doctor and under the guidance of the doctor for examination and then standardized treatment.