Symptoms of hypoxic asphyxia after birth mainly include central nervous system injury, respiratory system injury, cardiovascular system injury and so on. 1. Central nervous system injury: postnatal hypoxia asphyxia may cause hypoxic-ischemic encephalopathy and intracranial hemorrhage and other diseases, resulting in central nervous system injury. 2. Respiratory system damage: Postnatal hypoxia asphyxia may cause meconium aspiration syndrome, pulmonary hemorrhage and respiratory distress syndrome, which may damage the respiratory system. 3. Damage to cardiovascular system: postnatal hypoxia asphyxia may cause hypoxic-ischemic cardiomyopathy, which manifests as arrhythmia, heart failure, cardiogenic shock, etc. There are other symptoms of hypoxia and asphyxia in newborns after birth, it is recommended that they should be treated under the guidance of doctors in time to avoid delaying the condition.