Bilateral frontotemporal widening of the extracerebral space is mostly considered to have a small amount of subdural effusion, or peripheral hydrocephalus, which may be due to poor circulation of fluid in the brain. In addition, infections should be excluded, and hypoxic and ischemic encephalopathy should be excluded. In this case, it should be highly suspected that the child has cerebral dysplasia, but it is necessary to see what clinical symptoms the child has now. If there are no clinical symptoms, you can continue to observe, for example, congenital hydrocephalus is characterized by a progressive increase in head circumference, the head circumference most often in the first few weeks or months after birth to begin to increase, but there are also significantly larger than normal at birth, but not necessarily a problem, you can continue to observe. The severity of the disease mainly depends on how much the widening is, whether it is particularly large, generally does not affect the child’s growth and development. As the child grows older, it will also be absorbed, do not worry too much, you need to go to the hospital for regular review, and at the same time to observe the changes in the child. If the child has no consciousness disorder, no repeated convulsions, and no abnormal growth and development, don’t worry too much. The baby regeneration also has a great ability to shape, need to dynamic observation, regular review in the hospital.