The key to the treatment of juvenile diabetes depends on the level of insulin function. Because the specific typing of juvenile onset diabetes mainly depends on the patient’s insulin level or C-peptide level, if the islet function level is low, suggesting type 1 diabetes, then long-term treatment with insulin for blood glucose control is required. If a patient is diagnosed with type 2 diabetes, he or she can use insulin for intensive glucose-lowering treatment in the early stage when blood glucose is relatively high, and then combine oral hypoglycemic drugs for treatment after blood glucose control has reached the standard, while gradually reducing the amount of insulin. Many diabetic patients with adolescent onset of diabetes can control their blood glucose well through diet and exercise control combined with oral hypoglycemic medication after their blood glucose control is stable.