Infant white matter injury symptoms are various, different parts of the brain white matter injury, symptoms are different, mainly manifested as mental retardation, decreased attention, memory loss, emotional dysfunction and other symptoms. 1. Intellectual development: white matter injury can cause mental retardation, and is often accompanied by physiological developmental stagnation, such as hearing, language ability, sensory ability will appear developmental delay, seriously affecting the normal life. 2. Mental state: white matter dysplasia can also affect the mental state, manifested as decreased attention, memory loss, emotional dysfunction and other symptoms, and when the condition is serious, even loss of consciousness, dementia, coma and so on. Infantile leukoencephalopathy may be associated with genetic factors, drug toxicity, infections, adrenoleukodystrophy and other factors. Diagnosis of infant white matter injury should also be combined with CT and other imaging tests, it is recommended to take the child to the hospital in a timely manner, a clear diagnosis, timely treatment, so as to avoid delays in the condition.