Patients with type 1 diabetes mellitus who experience frequent hypoglycemia should seek prompt medical attention to strengthen blood glucose monitoring and optimize insulin treatment regimen under the guidance of doctors. Patients with type 1 diabetes mellitus have poor pancreatic islet function, large fluctuation of blood glucose, and long-term dependence on insulin therapy, and their risk of hypoglycemia is significantly higher than that of other types of diabetes mellitus, so they can strengthen blood glucose monitoring and optimize the insulin treatment plan. 1. Enhance blood glucose monitoring: blood glucose can be monitored 7 times a day, including blood glucose before and after meals and before going to bed, or 24-hour dynamic monitoring of blood glucose, plus glucose monitoring can help early detection and correction of hypoglycemia. 2. Optimize insulin treatment plan: Adjust insulin dosage by monitoring blood glucose, or continuous subcutaneous insulin infusion can be used to simulate physiological insulin secretion pattern, which can help control blood glucose. Patients with type 1 diabetes mellitus who experience frequent hypoglycemia should seek prompt medical attention and adjust their treatment under the guidance of a physician.