It may be normal for a newborn to choke a little milk out of the nose for a month, just let the milk flow out. If accompanied by severe coughing, dyspnea, lip bruising and other phenomena, may also lead to aspiration pneumonia, should seek medical treatment. Newborns are still uncoordinated in their swallowing movements, and when milk enters the pharynx, it may enter the trachea by mistake and cause choking, while the pharynx is connected to the nasal cavity, so milk may be choked out of the nose. Parents can let the newborn lying on the side or flat on the head to the side, so that the milk flow out smoothly, so as to avoid choking into the trachea again, and at the same time to help the newborn clean up the nose; slow down the speed of feeding or burp can also reduce the occurrence of milk choking. If nasal choking is accompanied by violent choking and coughing, difficulty in breathing, and bruising of the lips and mouth, it means that a large amount of milk is choked into the respiratory tract, which may lead to asphyxia, aspiration pneumonia and other abnormalities, and needs to be actively resuscitated. Change the newborn into a prone position, with the head low and feet high on the thighs and the head slightly sideways to one side, tap out the milk that has choked into the airway, and seek medical attention as soon as possible.