One-month infant indigestion is mostly caused by improper feeding, abdominal cold and other factors, can be improved through general treatment and medication, the specific analysis is as follows: 1. Improper feeding: indigestion in one-month-old babies is mostly caused by not paying attention to the feeding rules and feeding posture, so try not to let babies eat milk when they are crying, and eat less and more often, which can effectively improve this symptom. If you are breastfeeding, it is recommended that mothers should eat a light diet, avoid overwork, and avoid spicy, greasy and stimulating foods, which can also help to relieve the symptoms of indigestion in infants. 2. Cold abdomen: If the baby has obvious abdominal distension, you can apply hot compresses or clockwise massage to the abdomen, which can effectively relieve indigestion and abdominal distension. You can also use probiotics such as Clostridium casei and Bifidobacterium bifidum under the guidance of your doctor to help regulate the intestinal flora of your baby. For one-month-old infants with symptoms of indigestion, it is recommended to seek prompt medical attention from a specialist for judgmental assessment and targeted management or treatment.