Patients just eat full not long after feeling hungry, indicating that digestion is relatively fast, the first clear have the following factors: 1, diet structure: eaten food is relatively light, fat protein content is small, the three major nutrients in the fastest emptying of sugar, protein is the second, the slowest emptying is fat. If the diet is dominated by starchy substances, and the amount of protein and fat is very little, after eating, there will be fast emptying and hunger. You can adjust the structure of your diet and add more high-protein foods. Lipid foods should be controlled to prevent hypertension, hyperlipidemia, hyperglycemia and obesity.2. Diabetes: further check fasting blood sugar, two-hour postprandial blood sugar and glycosylated hemoglobin to understand whether there are three more and one less symptoms that appear in diabetes, i.e., eating more, drinking more and urinating more, but easily wasting, and the patient will be hungry quickly.3. Hypermetabolic state: thyroid function and thyroid ultrasound should be checked to understand There is no hypermetabolic state caused by hyperthyroidism, because the metabolism is too fast, patients are also prone to early hunger. If hyperthyroidism is treated symptomatically, the symptoms will be relieved gradually.4. Occupational lesions: further investigation of the gastrointestinal tract, ultrasound, gastroscopy and other related examinations are needed to understand whether there are occupational lesions.