Glucose tolerance water put more than 100ml, usually for the results will not have a great impact, mainly glucose content should be applied in accordance with the law, in addition to strictly in accordance with the examination time. Glucose tolerance test mainly chooses to measure fasting blood glucose after 8~10 hours of fasting, and then 75g of glucose should be taken with 300ml of lukewarm water, after which the blood glucose status should be measured in one hour, two hours and three hours respectively, to further determine the function of pancreatic islets; putting more than 100ml of water will not have too much effect on the results of the test. If abnormalities in glucose tolerance are found through the examination, standardized treatment should be carried out under the guidance of clinicians; once symptoms such as dry mouth and weight loss are found in daily life, timely medical observation should be made to prevent delays in the condition.