Elderly diabetes mellitus male 57 years old often occurs hypoglycemia causes include dietary factors, exercise factors, medication factors, endogenous insulin secretion is too much. 1. Dietary factors: diabetic patients should eat regularly and quantitatively, if eating irregularly, there is a possibility that hypoglycemia often occurs. 2. Exercise factor: If a lot of exercise is carried out and the use of drugs remains unchanged, hypoglycemia may often occur. 3. Medication factor: If using sulfonylurea, non-sulfonylurea agonists, such as glimepiride, gliclazide or repaglinide, or insulin, hypoglycemia may occur easily. 4. Excessive endogenous insulin secretion: Hypoglycemia can also occur frequently if the patient suffers from insulinoma and other diseases. Hypoglycemia often occurs in diabetic patients, need to clarify the cause and adjust the treatment under the guidance of the doctor.