The light red color of urine needs further examination in hospital to clarify the possible causes: 1, due to drugs or food staining, such as the consumption of large amounts of carrots, porphyrins, aminopyrine tablets, rifampin capsules, etc., can lead to staining of urine, or the consumption of red pigmented food can also appear transient urine staining, urine routine examination does not contain red blood cells, stop the relevant drugs, food 2, the presence of bleeding diseases in the urinary system, such as acute inflammation, tumors, polyps or stones can cause mucosal rupture and bleeding or tumor rupture and bleeding, then blood mixed in the urine can be manifested as red urine color, you need to go to the hospital for urinary routine, urinary system ultrasound, CT and other tests to confirm the diagnosis of the above diseases. 3, systemic coagulation dysfunction, such as idiopathic thrombocytopenia or red blood cells. For example, idiopathic thrombocytopenia or coagulation dysfunction can appear as red urine, not only with bleeding from the urinary tract, but also with bleeding from the skin, sclera or gums.