After weaning the baby drinking milk powder urine yellow consideration is improper feeding, drinking less water caused, but also may be related to factors such as urethritis. 1. improper feeding, after weaning, if often one-time to feed the baby too much milk or milk concentration is too high, may lead to lack of water, urine urea content is high, so it is more likely to appear this kind of symptoms. 2. Drink less water, if you usually do not give your baby water or the weather is hotter, sweating more, may lead to a lack of water in the body, this symptom. 3. Urethritis, if the baby has a urethritis, urethral secretion increases, may lead to this situation. After weaning the baby drinking milk powder urine yellow, there may be other reasons, it is recommended to go to the hospital in time, improve the examination to clarify the cause, under the guidance of the doctor to give targeted treatment or treatment.