Always feel empty stomach may be too much exercise, eat less physiological factors, but also may be acute gastritis, diabetes, hyperthyroidism and other disease factors. 1. Physiological factors: If the patient recently exercise or eat less, resulting in rapid consumption of food in the stomach, easy to hunger, which will always feel empty stomach, is a normal physiological phenomenon. 2. Acute gastritis: acute gastritis is usually associated with pathogenic microbial infections, eating cold, alcoholism, heavy metal poisoning and other factors, the patient will often appear abdominal pain, diarrhea, nausea, vomiting and other symptoms, some patients may also be manifested as fatigue, loss of appetite, and so on, which in the subjective feeling of the stomach may appear empty feeling. 3. Diabetic patients will always feel empty stomach and drink more food, hyperthyroidism patients due to high metabolism will also appear always empty stomach feeling. It is recommended that patients always feel empty stomach, timely medical treatment, under the guidance of the doctor to clarify the diagnosis, and take targeted treatment.