Bilateral ventricular widening may be caused by congenital developmental malformation, cerebral palsy and hydrocephalus. If the ventricular widening occurs in the fetal stage, it is usually not a big problem and can be absorbed slowly. It is recommended to review the ultrasound regularly to observe the ventricular widening, and then check the thinking ultrasound to exclude congenital developmental abnormalities such as spina bifida. The causes of cerebral palsy include genetics, intrauterine hypoxia, hypoxia during delivery and acquired developmental abnormalities, etc. The diagnosis of cerebral palsy needs to be combined with clinical symptoms. The clinical symptoms of cerebral palsy include increased muscle tone, inability to lift the head and make fists with both hands at 3 months, as well as personality abnormalities and mental retardation. Early treatment of cerebral palsy is more ideal, and it is best to visit a professional hospital as soon as possible to rule out the symptoms of cerebral palsy before treating them symptomatically.