Hepatogenic diabetes is mainly caused by the liver, so if you have a history of liver disease and elevated blood sugar, you need to rule out the presence of hepatogenic diabetes. So how to identify and diagnose hepatogenic diabetes mellitus? 1, diabetes has a clear history of liver disease before the onset of liver disease, sometimes occurring simultaneously with liver disease; 2, there is evidence of liver function abnormalities in laboratory tests and imaging tests; 3, blood glucose results meet the diagnostic criteria for diabetes mellitus: fasting blood glucose ≥ 7.0 mmol / L and/or 2 hours after the meal blood glucose ≥ 11.1 mmol / L; 4, blood glucose results of the improvement or deterioration of the changes in liver function is positively correlated; 5, no previous history of diabetes and diabetes There is no history of diabetes or family history of diabetes, and there is no disorder of glucose metabolism caused by pregnancy, stress and medication (e.g. glucocorticoids, diuretics, antihypertensive drugs, contraceptives), etc.; 6. Exclude primary diabetes mellitus (especially type 2 diabetes mellitus) as well as secondary diabetes mellitus caused by diseases of the pituitary gland, adrenal glands, and thyroid glands.