Hypoglycemia is a condition characterized by abnormally low plasma glucose levels, caused by various etiologies, and clinically presents as a syndrome mainly featuring sympathetic nervous excitement and brain cell glucose deficiency. For healthy individuals, hypoglycemia is diagnosed when blood glucose levels fall below 2.8 mmol/L. For diabetic patients, hypoglycemia is diagnosed when blood glucose levels are below 3.8 mmol/L. Hypoglycemia can be categorized into fasting hypoglycemia and postprandial hypoglycemia based on its causes. Common symptoms of hypoglycemia include palpitations, fatigue, trembling hands, accelerated heart rate, sweating, mental distraction, dizziness, drowsiness, unstable gait, irritability, and even odd behaviors. In severe cases, it can lead to coma or even death.