Intrauterine infection pneumonia is defined as meconium aspiration pneumonia or amniotic fluid aspiration pneumonia. It is the most common form of aspiration pneumonia that occurs prenatally or during labor due to the inhalation of more amniotic fluid mixed with meconium in utero or during labor, and has respiratory distress as its main clinical manifestation. The severity of symptoms depends on the nature and amount of inhaled amniotic fluid, and can range from mild respiratory distress to severe respiratory distress, with shallow and rapid breathing, nasal agitation, trismus, moaning and cyanosis, and in severe cases, respiratory failure. The key to treating this disease is to improve ventilation and oxygen therapy support, but also to prevent and control infection, choose broad-spectrum antibiotics for gram-negative bacteria, and to do mechanical ventilation according to the degree of hypoxia.