There is no way to recover from impaired islet function because the pancreas is mainly used to secrete insulin and once it is damaged, insulin secretion will be affected, clinically there is no clear method to repair islet function in either Chinese or Western medicine. The impaired islet function is mainly seen in diabetic patients, as the disease progresses, the islet function will be damaged, resulting in insufficient insulin secretion resulting in elevated blood glucose, there is no good drug to repair the islet damage, patients can increase the sensitivity of insulin through exercise and diet, it can alleviate the impaired islet function resulting in elevated blood glucose. The patient can increase insulin sensitivity through exercise and diet to relieve the elevated blood glucose caused by impaired islet function. The diet should be light, with more vegetables and foods such as radish and silver fungus, and appropriate physical exercise every day, such as walking and playing Tai Chi.