Infants can be judged by clinical symptoms and imaging tests to determine whether there is any problem after falling on the head. If there are no obvious symptoms, there may not be a big problem, and if nausea and vomiting, dizziness and headache, photophobia, tinnitus, etc. occur, you can cooperate with the doctor to carry out imaging tests. If the infant is in good spirits after falling on the head and has a normal diet, it means that the infant does not have any serious problems after falling on the head, and may only have a minor head trauma, so good care can be provided and no special treatment is needed. If the infant has nausea and vomiting, dizziness and headache, photophobia and tinnitus, insomnia and palpitation, confusion and complete coma after falling on the head, it may be related to intracranial hematoma, intracranial hemorrhage and other factors, in which case it is more serious, and it is often necessary to cooperate with the doctor to carry out imaging examinations such as cranial CT and MRI, so as to determine whether there is any problem with the infant. Therefore, after an infant falls on the head, the next step should be decided in conjunction with the infant’s symptoms, and if any of the above undesirable symptoms are present, immediate medical attention is required to avoid serious consequences.