If neonatal aspiration pneumonia occurs after inhalation of blood water, cardiac ultrasound is usually needed to rule out the possibility of heart involvement or congenital heart disease, which will guide the subsequent treatment. Inhalation of blood and water in newborns may cause aspiration pneumonia, resulting in respiratory distress, hypoxemia, and even affecting the function of the heart or ischemic-hypoxic encephalopathy. In addition, if the newborn also has congenital heart disease, it may also aggravate the degree of pneumonia. Therefore, cardiac ultrasound is needed to determine the condition and guide the subsequent treatment. Therefore, parents need to bring their newborns to the hospital for relevant examinations in a timely manner when they find that their newborns have the above conditions, and actively treat the symptoms after clarifying the causes of the disease, so that the prognosis will be better.