Cranium is one of the hardest groups of bone tissues in the human skeleton, which plays a very important protective and supportive role for the brain and head and face organs, and provides a closed and stable cranial cavity environment for the normal operation of the brain and nerve functions, which can be said to support the healthy operation of the whole organism. If the skull is jeopardized or damaged, it may directly threaten the safety of the brain, affect the health of the whole organism, and even endanger life. But real life is always full of all kinds of danger, the skull is certainly very hard, usually play a strong protective role. But when subjected to a huge violent impact from the outside world, it may also be damaged. For example, serious traffic accidents, production accidents, falling objects, etc. may directly damage the skull, or lead to intracranial injuries combined with high intracranial pressure need to go to the bone flap decompression, there are also many spontaneous craniocerebral disorders, such as cerebral hemorrhage, brain tumors, severe large cerebral infarction, etc. may also be combined with high intracranial pressure, but also need to go to the bone flap decompression, these cases will be left behind the cranial bone defects. After removing the bone flap, there is no localized strong protection of the hard skull, which can be very dangerous. How to protect the head after flap removal? It usually takes about 3 months before a skull repair surgery can be performed after flap removal, and it is very important to protect your head during this period. At this time, we should pay attention not to carry out strenuous exercise, do not participate in heavy labor, head activity amplitude is not too large, especially pay attention to do not bump against the skull defects in the local, to prevent the impact of external objects, sleep, pay attention to do not pressure to the defect area, if necessary, can wear a moderately loose hair bands, defects in the local protection. In addition to how to protect the head after removing the bone flap this problem, the most important thing is still timely cranial repair surgery, generally about three months after removing the bone flap can be done to repair.