The treatment of hypoglycemia includes two aspects: one is to relieve the symptoms of inadequate sugar supply to the nervous system, and the other is to correct the various causes of hypoglycemia. Dizziness is generally caused by insufficient sugar supply to the nervous system and can be relieved by correcting the abnormal blood sugar, but attention should be paid to the treatment of the cause. For mild to moderate hypoglycemia, it can be relieved by taking sugar water and sugary drinks orally, or by eating candy, propolis, bread and buns. For severe cases and patients suspected of hypoglycemic coma, give 50% glucose 60-100ml intravenously immediately, followed by 5%-10% glucose solution intravenously, and add hydrocortisone 100mg or glucagon 0.5-1mg intramuscularly or intravenously if necessary. Do not feed to prevent respiratory asphyxia. After relieving the emergency symptoms, attention should also be paid to tracing the cause of the disease. For drug-related hypoglycemia, the relevant drugs should be discontinued promptly. History of alcoholism, systemic related diseases especially tumor, wasting diseases, malnutrition, history of gastrointestinal surgery, etc. should be paid attention from lifestyle habits. Those with suspected insulinoma should be further localized and diagnosed, and surgical resection should be performed for patients with definite insulinoma. Therefore, for the treatment of hypoglycemia, emergency treatment to replenish blood sugar is only one aspect, more important is to find the cause and usual prevention.