High insulin 1 hour after a meal may indicate excessive or delayed peak insulin secretion, possible insulin resistance, hyperglycemia and other abnormalities. Under normal circumstances, insulin reaches its peak about half an hour to one hour after a meal, and blood glucose returns to the fasting level 3 to 4 hours after the meal. High insulin 1 hour after meal may be caused by excessive insulin secretion, delayed insulin peak, etc. Insulin resistance, hyperglycemia and other conditions may exist. It is recommended to further improve the fasting and postprandial blood glucose, glucose tolerance test, glycated hemoglobin and other tests. High insulin 1 hour after meal should go to the hospital and be treated under doctor’s guidance.