Intracranial infections in infants may be caused by factors such as low immunity and craniocerebral trauma. 1. Low immunity: Infants with low immunity and improper daily care may induce intracranial infections, such as meningitis and encephalitis, manifested by fever, convulsions and coma. 2. Craniocerebral trauma: the pediatric head suffered trauma, may destroy the blood-brain barrier, so that the brain tissue and the outside world to connect, will lead to germs into the brain tissue, it is easy to cause intracranial infections, this kind of infants have a clear history of head trauma. Infant intracranial infection may also have other causes, it is recommended to go to the hospital in a timely manner, improve the examination to clarify the cause of the disease, to give targeted treatment or treatment.