Insulin intensive therapy may result in better recovery of pancreatic islet function after a 3-month period of injection therapy, but it is not required that all insulin intensive therapy requires 3 months, it is decided based on the patient’s condition. Some newly diagnosed type 2 diabetes patients are prone to impaired islet function due to long-term high glucose toxicity and insulin resistance. Intensive insulin therapy is given between 2 weeks and 3 months and is mainly used to lower the patient’s blood glucose and relieve hyperglycemic toxicity. Intensive insulin therapy is beneficial for pancreatic cells to regain certain functions and can effectively delay the onset of diabetic complications. How long intensive insulin therapy takes is related to recovery. Intensive treatment with insulin is best carried out in regular hospitals, and during the treatment, changes in blood glucose can be closely observed to avoid excessive fluctuations in blood glucose.