This is mostly due to the fact that children’s skull develops faster, while the brain develops relatively slower, so it will show widening of the extracerebral space, as long as the baby’s development is normal, not a pathological condition, no need to worry. It is recommended to feed your baby reasonably, drink more water, supplement calcium and cod liver oil appropriately, get vaccinated on time, and have regular checkups to understand the development. In addition, the baby may also have external hydrocephalus, which is related to brain dysplasia and asynchronous development of the skull and brain tissues. Pay attention to observation, whether the baby has abnormal phenomena such as frequent stuffy energy, if so, appropriate medication to promote the metabolism of brain cells, and be aware of regular review, so as not to cause adverse effects. If it is a normal factor, it can be closed by itself after 1 year of age, and there is no need to give any special treatment.