Although insulin pump is currently the most advanced means of treating brittle diabetes, to maximize its efficacy and superiority, it requires a professional physician to make fine adjustments to the parameters of the insulin pump. The adjustment process is long and difficult, requiring great patience and careful work on the part of the physician, as well as great patience and close cooperation on the part of the patient. Whether the insulin pump can achieve the best efficacy and whether the final blood sugar can be ideally controlled depends on multiple factors: the performance of the insulin pump, the quality of the insulin pump, the insulin dosage form, the clinical skills of the doctor and the patient’s compliance with the treatment. If all the factors can achieve the best tacit cooperation, the insulin pump can play its role to the fullest, and the patient’s blood sugar can be optimally controlled.