Baby spitting up milk and yellow color, mostly due to the child’s indigestion, gastrointestinal tract dysfunction and symptoms, may be caused by the following causes: 1, the baby after the cold will cause the symptoms of spitting up milk yellow, because the baby’s own immunity is low, weak after the cold, gastrointestinal function is prone to disorders. 2, may be caused by the baby cold, the indoor temperature is too low or the baby kicked the blanket at night, easy to cause After catching a cold, the child’s tummy will feel uncomfortable and cause vomiting of milk. The yellow color of the spit up milk may be due to the baby’s bile mixed with milk, when the baby spit up milk color is abnormal, you must take the baby to the hospital for examination. 3, when the baby is drinking milk, accidentally inhaling too much air can also lead to spitting up milk.