Vomiting when a child falls out of bed may be caused by excessive crying, concussion, intracranial hemorrhage, etc. 1. Excessive crying: When a child falls out of bed, he or she may cry due to severe pain caused by the impact, and some children may vomit after intense crying. 2. Concussion: When a child falls out of bed, the impact on the brain may cause transient brain dysfunction and concussion, and the child may have headache, dizziness, photophobia, nausea, vomiting, anorexia and other symptoms. 3. Intracranial hemorrhage: If the impact is more serious, it may cause intracranial injury or hemorrhage, and the child may also experience vomiting, dizziness, and coma. The child fell out of bed vomiting, there may also be other reasons, it is recommended to go to the hospital in a timely manner, improve the examination to clarify the cause of the disease, under the guidance of the doctor to give targeted treatment or treatment.