The skull will heal after craniotomy, it is only a matter of time, but it must be clear that different surgical methods and different methods of cutting the skull will determine whether and how it will heal later. Generally speaking, the most common is to reset the skull with connecting piece and connecting plate after craniotomy, which is the most common phenomenon, and there will be 1-2mm gap at the later stage, but it will grow slowly and healing will not be a problem at the later stage. However, some comminuted skull fractures or debridement decompression surgery treatment, the skull in this place will often face the problem of large defects, which will not heal at a later stage, and only external external force can be taken for corresponding treatment, including skull repair surgery, applying titanium mesh for proper repair, so, it must be judged according to the situation.