The hazards of sleeping on an empty stomach include hypoglycemia and malnutrition, affecting the quality of sleep and so on. 1. Hypoglycemia: sleeping on an empty stomach without eating any food, and have to wait until 7:00 the next morning to replenish energy, may cause hypoglycemic episodes, especially for diabetic patients are more likely to occur. 2. Malnutrition: sleeping on an empty stomach for a long time may cause nutrient deficiencies, resulting in malnutrition. 3. Impact on the quality of sleep: sleeping on an empty stomach will have a feeling of hunger, may also cause hypoglycemia, cold sweat, hand tremors and other symptoms, seriously affecting the quality of sleep. If sleeping on an empty stomach leads to uncomfortable symptoms, it is recommended to go to the hospital.