Low food intake and abdominal bloating may be related to functional dyspepsia, chronic gastritis, gastric cancer, abdominal tumors or occupations. 1. Functional dyspepsia: patients usually have early satiety, belching, epigastric pain, epigastric distension, nausea, vomiting, loss of appetite and other symptoms, which can be persistent or recurrent. 2. Chronic gastritis: most patients will have acid reflux, nausea, loss of appetite, postprandial fullness, epigastric pain and other symptoms of indigestion. In serious cases, patients may have symptoms such as emaciation, anemia, tongue inflammation, diarrhea and so on. 3. Gastric cancer: Most of the patients are asymptomatic in the early stage, and a few of them may suffer from indigestion, fullness and discomfort. In advanced stage, stomach cancer may have symptoms such as weight loss, epigastric pain, etc. In advanced stage, patients may also have symptoms such as anemia, emaciation, anorexia and so on. 4. Abdominal tumor or occupying space: it mainly manifests as painless ovoid mass in the abdominal wall, which is hard in texture and grows slowly. Due to the presence of abdominal mass, patients usually feel bloated. There are many other reasons that lead to the patient’s abdominal distension, it is recommended that the patient should go to the regular hospital in a timely manner, after clarifying the cause of the disease, and then under the guidance of the doctor to carry out targeted treatment.