Glucose tolerance generally refers to oral glucose tolerance test. High blood glucose at 2 hours of oral glucose tolerance test may be caused by diabetes, oral medication, etc. It is recommended to consult a doctor in time to clarify the cause of the disease and then treat it. If the elevated blood glucose is caused by diabetes mellitus, the symptoms can be relieved by regular diet, exercise and oral hypoglycemic drugs. Glucose tolerance test results of fasting blood glucose greater than 6.1mmo/L, 2 hours after meal blood glucose greater than 7.8mmo/L for elevated blood glucose, fasting blood glucose greater than or equal to 7.0mmo/L, 2 hours after meal blood glucose greater than or equal to 11.1mmo/L suspected diagnosis of diabetes mellitus, it is recommended that timely medical care, consult a doctor. Glucose test 2 hours of high blood sugar may be due to diabetes, can be under the guidance of the doctor oral hypoglycemic drugs for treatment, if necessary, can use insulin injection. High blood glucose at 2 hours of glucose tolerance may also be caused by medications, such as thiazide diuretics, glucocorticosteroids, oral contraceptives, aspirin, tricyclic antidepressants, etc., which can all cause blood glucose elevation and impaired glucose tolerance. Patients with high glucose at 2 hours of glucose tolerance should go to the hospital in time if they feel unwell.