Infants’ brain waves are mainly collected by EEG and a graph is shown through the recorder. The EEG abnormalities are seen in the following areas: 1, epilepsy, often can appear sharp waves, spikes or peak arrhythmias in this case, often clinically manifested as convulsive seizures, can be disoriented petit mal seizures, but also generalized tonic grand mal seizures. 2, some children with central nervous system infection can also appear abnormal brain waves, often can also be accompanied by fever, headache, vomiting, convulsions, this time to improve the lumbar puncture, check the cerebrospinal fluid, and then further clarify the diagnosis. The EEG can also be abnormal in children with hypoxic-ischemic encephalopathy, which can be diagnosed by head CT or MRI. 4. Some patients with traumatic brain injury can also have EEG abnormalities.