The process of vomiting is a neurological reflex that includes a series of physiological reactions caused by muscle contractions. During vomiting, the abdominal muscles and diaphragm will contract violently causing the abdominal cavity to increase in pressure to compress the stomach contraction, resulting in retrograde vomiting of stomach contents through the esophagus and out of the mouth. If the vomiting is more violent, the pressure is too high in the process of vomit ejection, the nasopharynx soft palate is not well coordinated with the uplift and does not block the back of the nostril, the vomit will enter the nasal cavity through the nasopharynx and eject from the nasal cavity, which is not a pathological condition. It is not a pathological condition. It is just a situation that occurs when the muscles of the pharynx do not cooperate well when vomiting, so there is no need to worry.