One-week-old children’s stomach pain can be seen in gastrointestinal dysfunction, digestive tract surgical diseases, etc., specific need to combine the baby’s specific situation to determine. 1. Gastrointestinal dysfunction: when the baby has a poor diet, the digestive tract can not tolerate, abdominal pain may appear, may be accompanied by vomiting, nausea and other symptoms. Or the baby has not been defecated for several days, there is constipation, may also appear the above symptoms. 2. Surgical diseases of the digestive tract: such as acute appendicitis, abdominal pain is the main symptom, most of the pain around the umbilicus with metastatic right lower abdominal pain, abdominal pain is not typical for this age group of babies, may be accompanied by nausea, vomiting or diarrhea and other symptoms. Intussusception can also appear the above symptoms, often accompanied by paroxysmal crying, can be resolved jam-like stool. Tummy pain in one year olds may also be associated with other causes, and it is advisable to actively seek medical attention from a specialist to assess and clarify the cause.