There is a relationship between diabetes and the liver, and those with abnormal liver function may have abnormal blood glucose. The liver is an important organ for glucose metabolism. The liver can absorb and utilize glucose, and convert glucose into hepatic glycogen for storage, thus lowering blood glucose; the liver can also provide glucose and energy for the body by breaking down hepatic glycogen. For patients with liver dysfunction and impaired liver function will directly lead to abnormal blood glucose regulation. For patients with severe liver injury, such as hepatitis and cirrhosis, the ability of the liver to absorb and utilize glucose and convert glucose into hepatic glycogen decreases, which leads to an increase in blood glucose and causes hepatogenic diabetes. Meanwhile, since the liver has no reserve of hepatic glycogen, when the body’s energy supply is insufficient, the liver is unable to break down hepatic glycogen to provide glucose and energy, thus easily leading to hypoglycemia. It should be noted that patients with hepatic insufficiency should go to the hospital for treatment in time and take medication as prescribed by the doctor.