In general, the possibility exists for recovery of insulin function in type 2 diabetes, but there are many prerequisites for recovery of insulin function and subsequent blood glucose monitoring is still required. Approaches include five areas of prevention, weight loss, intensive glucose reduction, metabolic surgery, and pancreas or islet transplantation, which are recommended under medical supervision. The mechanism is mainly to restore the individual’s fat threshold, release glucolipid toxicity, or improve gut hormones and gut flora, so that the de-differentiated insulin beta-cells regain the ability to secrete insulin. Pre-diabetes is the best time to reverse diabetes, in the pre-diabetes need to carry out lifestyle intervention, through diet and exercise therapy and other interventions to achieve the effect of weight loss, thereby improving the body’s insulin sensitivity, which promotes the transformation of pre-diabetes to normal glucose metabolism; if the effect of lifestyle improvement is not good enough, you can add the use of medication, such as pioglitazone and so on. It is recommended that diabetic patients under the guidance of professional doctors for standardized treatment.