Diabetic patients need insulin treatment according to their condition, pancreatic islet function and the degree of blood glucose elevation, the main programs are as follows: 1. long-acting insulin plus oral hypoglycemic drugs, regular injection of long-acting insulin once a day. 2. premixed insulin is injected subcutaneously twice or three times a day, and premixed insulin is injected twice before three meals or breakfast and dinner. 3. four times a day insulin is injected for type 1 diabetes or type 2 diabetes with poor pancreatic function. Type 1 diabetes or type 2 diabetes patients with poor islet function, subcutaneous injection of short-acting insulin before three meals and long-acting insulin before bedtime to control blood glucose, according to the patient’s blood glucose situation, timely adjustment of insulin dose.