Hypoglycemia may be caused by functional, pathologic, and pharmacologic factors, etc. It is recommended that patients experiencing hypoglycemia seek prompt medical attention. 1. Functional factors: for example, too little intake of carbohydrates or sugar may lead to low blood sugar. 2. Pathological factors: For example, if you suffer from insulinoma, insulinoma will stimulate the pancreatic islets, leading to an increase in insulin secretion, and the function of insulin is to lower blood sugar, so if there is too much insulin, the blood glucose will be significantly lower. 3. Pharmacological factors: for example, patients with diabetes, injecting too much insulin may lead to lower blood sugar in the body. Hypoglycemia may also be seen in liver disease, hypoadrenocorticism and other diseases, if the symptoms of hypoglycemia, persistent and unrelieved, need to consult a doctor in time to give targeted treatment.