A 1-year-old baby with food retention will experience abdominal pain, bloating, belching (hiccups), nausea, vomiting, etc. Usually there are no obvious symptoms in the early stages of the disease. Specific symptoms vary from person to person. Accumulation of food is a common functional gastrointestinal disease in the clinic. 1 year old babies with accumulation of food will have abdominal pain, the pain site mainly occurs in the upper abdomen, and there will also be abdominal distension, burning sensation, postprandial feeling of fullness or early satiety and other symptoms. Symptoms such as belching (hiccups), nausea, vomiting and loss of appetite may also occur. Since the disease is chronic, it has a long course and the symptoms may recur, waxing and waning, with significant individual variability in the specific symptomatology. In addition, most children do not have any obvious symptoms in the early stages of the disease. Accumulation of food may be related to visceral hypersensitivity, gastric acid secretion, gastroduodenal motility disorders and other reasons. When a 1 year old baby develops the above symptoms, it should be highly suspected that he/she is suffering from food retention and should go to the hospital promptly to find out the cause of the problem.