Routine CT of scalp hematoma depends on which part of the scalp, CT is usually routine CT frontotemporo-occipital scalp hematoma, frontotemporo-parietal is relatively easy to find. If it is a higher position, it may not be able to sweep, this case can do CT crown scanning, do three-dimensional CT can be found in which position there is a scalp hematoma, can be seen. Generally, we will not do CT for the sake of scalp hematoma, scalp hematoma with hand touch, we know the location and scope of the hematoma. The main purpose of CT is to rule out whether there is any contusion inside the brain and whether there is any intracerebral hematoma.