Weakly positive urobilinogen is generally caused by both physiologic and pathologic factors. Weakly positive urobilinogen caused by pathologic factors indicates that bilirubin enters the urinary system to increase urobilinogen, which is considered to be caused by liver lesions. It is necessary to identify the cause and treat the cause. 1. Physiological factors: due to long-term sleep deprivation, late at night, drinking water is seriously insufficient and other factors, affecting the endocrine system, circulatory system abnormalities, resulting in the inability to timely discharge urobilinogen, resulting in urobilinogen performance weak positive symptoms. 2. Pathological factors: usually caused by viral hepatitis, cirrhosis, liver cancer and other diseases, resulting in liver damage, bilirubin into the blood due to damage, resulting in increased urobilinogen, showing weak positive symptoms. 3. Red blood cell destruction: such as hemolytic anemia and megaloblastic anemia and other diseases, can also lead to high urobilinogen, positive symptoms. It is recommended that patients with weakly positive urobilinogen should consult a doctor in time to identify the cause of the disease and standardize the treatment. And should be followed up regularly, pay attention to comprehensive nutrition, reasonable diet, strengthen the resistance, help the condition recovery.