Diabetic patients taking insulin can appear very easily hungry, need to monitor blood glucose in time, such as the occurrence of hypoglycemia need to replenish sugar. Diabetic patients after insulin hungry, because insulin to promote the whole body tissue cells of glucose uptake and utilization, and inhibit the decomposition of glycogen and glycogen isomerization, resulting in lower blood glucose accompanied by a sense of hunger, may also appear hypoglycemia, the need for timely monitoring of blood glucose. Diabetic patients should always have food with them, and if hypoglycemia occurs after insulin injection, sugar can be replenished in time. If frequent hypoglycemia occurs, it suggests that the glucose-lowering program is unreasonable, and the medication should be adjusted under the guidance of the doctor.