Feeling empty in the stomach after eating may be due to rapid intestinal emptying function caused by the performance of rapid intestinal peristalsis, if this symptom is only once in a while and soon relieved. If always full still feel empty feeling in the stomach need to consider whether caused by pathological factors: 1, gastrointestinal dysfunction: consider the possibility of chronic gastrointestinal diseases, such as gastric ulcer, duodenal ulcer, indigestion, etc., causing gastrointestinal dysfunction, usually manifested as hunger and fullness, abdominal pain, bloating, acid reflux, belching, etc.. This is a typical clinical manifestation of diabetic patients, which is clinically referred to as easy to eat and hungry, usually accompanied by thirst, increased urination and weight loss. At this time, it is recommended to check blood sugar, glycosylated hemoglobin or perform glucose tolerance test for early detection, early diagnosis and early treatment; 3, hyperthyroidism: that is, hyperthyroidism. A clear diagnosis can be made with a thyroid function test. No matter which disease causes this condition, it is important to pay attention to it and go to the hospital for relevant examinations to clarify the cause so as not to delay the treatment.