Men’s long-term yellow urine may be physiological phenomenon, but also may be caused by liver disease, urinary system diseases, diabetes and other reasons. 1. Physiological phenomenon: usually drink less water sweating more concentrated urine will cause long-term yellow urine, in addition, taking B vitamins, or other drugs can also cause men long-term yellow urine. 2. Liver disease: various types of hepatitis, fatty liver, alcoholic liver, etc., resulting in abnormal liver function, affecting the metabolism of bilirubin, can also cause long-term yellow urine. 3. Urinary system diseases: chronic inflammation of the urinary system, or stones, tumors and other diseases, may also lead to long-term yellow urine. 4. diabetes: diabetes is an endocrine disease, sugar metabolism disorders may cause the urine contains glucose, etc., will also lead to men with chronic yellow urine. There may be other reasons why a man’s urine is yellow for a long time, and he needs to go to the hospital in time for further examination, to clarify the cause of the disease and comply with the doctor’s instructions for treatment.