There is a possibility of recovery from delayed peak insulin secretion. Insulin secretion curve is an important method to determine the function of pancreatic β-cells, the specific operation is to firstly determine the fasting insulin and blood glucose levels, and then take 75g glucose orally to determine the insulin and blood glucose levels at 0.5 hours, 1 hour, 2 hours and 3 hours after taking glucose. The peak insulin secretion of normal people usually occurs 0.5 to 1 hour after eating, if the peak secretion is delayed to more than 1 hour or even up to 2 to 3 hours, it is called delayed peak insulin secretion. Delayed peak insulin secretion is mostly seen in type 2 diabetes and obese patients, and it is not completely reversible, but there is still a possibility of recovery in early stage patients, and it can be improved through diet, exercise and medication. People with delayed peak insulin secretion should go to a regular medical institution in time and actively cooperate with the relevant diagnosis and treatment.