Children’s encephalitis varies in severity, with symptoms such as fever and cold at the initial stage, and dizziness, headache, vomiting, confusion and even convulsions in severe cases, leaving many sequelae such as hemiparesis, aphasia and behavioral abnormalities. 1. In the early stage of encephalitis, children’s neurological symptoms are not obvious, such as fever, cold, vomiting, diarrhea and other symptoms. 2. When encephalitis develops further and intracranial pressure rises gradually, children may have dizziness, headache, vomiting and confusion, with severe headache and jet-like vomiting. Some of the children have mental abnormalities, manifesting as excitement and talkativeness, irritability, abnormal behavior, and even hallucinations, hallucinations and so on. 3. Sequelae, which may be manifested as hemiparesis, aphasia, abnormal behavior, or mental retardation. In conclusion, when children are suspected of having encephalitis, they should consult the pediatrician in time to clarify the cause of the disease and take targeted treatment.