One year and two months old baby’s big stomach may be caused by physiological phenomenon, liver and spleen enlargement and other reasons. 1. Physiological phenomenon: If the appetite is usually better, more meals may cause a large stomach. The child’s breathing is abdominal breathing, which can cause the abdomen to be frog-like, thus the phenomenon of a large stomach can occur, generally do not need special treatment. 2. Enlarged liver and spleen: The liver and spleen may be enlarged due to infections and cirrhosis, which may cause a large stomach as the disease progresses. Patients may also be accompanied by anemia, fever, chills and other symptoms. It is recommended that when a one year and two months old baby has a big stomach, go to the hospital in time and follow the doctor’s instructions for treatment to avoid delaying the condition.