In general, vomiting in children may be caused by improper diet, meningitis, abnormal vestibular function and so on. 1. Improper diet: Irritant or reflexive vomiting can occur if the baby is fed too fast or too much, fed or given medicine when the baby is crying, or not patted on the back after feeding. 2. Meningitis: refers to diffuse inflammatory changes in the soft meninges. The child may have crying, low-grade fever, vomiting, sleep disturbance, headache, etc. In severe cases, the headache is persistent and aggravated, and the vomiting is aggravated and may become projectile. 3. Abnormal vestibular function: If the vestibular function is abnormal, people will experience dizziness, nausea and vomiting. Common causes of abnormal vestibular function include labyrinthitis and motion sickness. In addition, the child vomiting can also be seen in other diseases, such as gastrointestinal dysfunction, etc. It is recommended that the child go to the hospital in a timely manner, to clarify the cause of the targeted treatment, to avoid delay in the condition.