Glucose tolerance generally refers to the glucose tolerance test, the results of which may be high due to improper diet, abnormal pancreatic islet function, etc. It is recommended that the patient identify the cause and then formulate a targeted improvement program. A high glucose tolerance test result generally refers to a 2-hour postprandial blood glucose value between 7.8-11.1mmol/L, suggesting that the patient may be in the pre-diabetic stage and at risk of developing diabetes. 1. Improper diet: Prolonged intake of foods with high sugar content or excessive intake of finer foods may lead to high glucose tolerance test results. This can be improved by prioritizing low-fat and low-sugar food choices as well as increasing exercise as appropriate to help restore impaired glucose tolerance. 2. Abnormal pancreatic islet function: Influenced by various factors such as heredity or obesity, some people may have abnormal insulin secretion or insulin antagonism, which may lead to high glucose tolerance test result in the early stage. In this case, it is recommended to identify the cause of the disease at an early stage, which can be adjusted through diet and exercise, and can also be improved by taking medication under the guidance of a doctor, such as insulin supplementation. It is recommended that patients with high glucose tolerance test results go to the hospital in time and follow the doctor’s instructions for treatment to avoid delaying their condition.