During an episode of hypoglycemia, attention should be paid to timely oral or intravenous glucose supplementation to correct the hypoglycemia, and at the same time, the cause of hypoglycemia should be clarified, so as to avoid or prevent the recurrence of the episode. Hypoglycemia is a group of clinical syndromes caused by a variety of etiological factors that reduce plasma glucose levels and cause corresponding signs and symptoms, often manifested as hunger, dizziness, fatigue, cognitive impairment and even coma. Hypoglycemia can occur in non-diabetic patients as well as in diabetic patients. The hypoglycemic state should be corrected in time when the attack occurs, and glucose water, candies, chocolates, sugary drinks, etc. can be taken orally, and patients who have already suffered from syncope should be sent to the doctor for intravenous glucose supplementation in time. In daily life, attention should be paid to improve the lifestyle to avoid the occurrence of hypoglycemia as much as possible. Such as: ① daily attention should be paid to meals on time; ② reasonable combination of meals, to ensure that the intake of carbohydrates in sufficient quantities; ③ carry sugary foods, in the occurrence of hypoglycemic aura in time to eat. For recurrent hypoglycemia, it is recommended to go to the hospital as soon as possible for examination and symptomatic treatment.