There are many reasons why children do not have fever and vomiting, parents should not take it lightly, but pay attention to it and go to the hospital in time, combined with other clinical symptoms and relevant examinations, diagnosed and treated for the cause of the disease, so as not to delay the condition. Common causes include exposure to cold, improper diet, gastritis, digestive tract malformation and brain trauma, etc. 1, exposure to cold: after the child’s abdomen is cold, it will cause gastrointestinal dysfunction, so that the gastrointestinal tract to increase the accumulation of gas caused by frequent vomiting, but there is no infection, and will not appear fever; 2, improper diet: if the child is overfed or there is unclean eating behavior, it can also lead to the child to appear vomiting without fever. 3, gastritis: if the child is affected by viruses, it can lead to vomiting, but not fever; 3, gastritis: the child is infected by a virus or certain bacteria, causing acute gastritis. When the degree of infection is not serious, it can be manifested as vomiting without fever, which should be combined with Helicobacter pylori test, gastric acid measurement and other tests to confirm the diagnosis; 4, digestive malformation: some children have congenital digestive malformations, such as esophageal stenosis, congenital hypertrophic pyloric stenosis and so on, which can cause children to experience frequent vomiting without fever, which should be done to further diagnose esophagoscopy, gastroscopy and so on; 5, traumatic brain injury: if a child’s brain If the child’s brain, especially the back of the brain area suffered trauma, it is easy to cause intracranial hemorrhage, then there will be frequent vomiting, poor mental state, individual children will be drowsy or coma. You should go to the pediatric neurosurgery department in time, and if necessary, do a cranial CT examination to determine whether there is intracranial injury and bleeding, and timely treatment.