Hypoglycemia may be caused by taking medication, long-term malnutrition, insulinoma, etc. It is recommended to consult a doctor in time to clarify the cause of the disease and then treat it. 1. Taking medication: diabetic patients taking hypoglycemic drugs, too large a dose may cause hypoglycemia, it is recommended to take medication under the guidance of a doctor. 2. Insulinoma: clinically characterized by recurrent episodes of fasting hypoglycemia. Pathologically, most of them are benign adenomas. Hypoglycemia may be manifested as dizziness, panic, cold sweat, hunger, blackness before the eyes, and severe loss of consciousness and shock may occur. When hypoglycemia occurs, the most rapid and effective, mild oral glucose water or sugary food can be; severe, especially the altered sanity of intravenous push 50% glucose 50ml, repeated if necessary, and need to continue intravenous drip 5% ~ 10% glucose solution and timely feeding to maintain normal blood glucose. When hypoglycemia occurs, we should find and determine the cause of the disease under the guidance of the doctor in time, and carry out the treatment according to the cause of the disease, which can effectively relieve the hypoglycemic state and prevent the recurrence of hypoglycemia.