For different individuals with diabetes,blood glucose control varies.In the blood glucose controlling,blood glucose levels are sometimes higher than the target,sometimes the diabetic patients may develop hypoglycemia.In insulin therapy for blood glucose fluctuations,the most important thing is to avoid hypoglycemia.Finding out regular patterns of blood glucose fluctuations,then according to that,we need to choose the right insulin preparations to treat the condition.For the patients with irregular fluctuations of blood glucose,insulin pump therapy should be a proper choice.