It is very common to have a headache after a blow to the head, and the first thing is to make sure that the exact form of the head is clear at that time, as well as the results of the CT head examination. Sometimes the bleeding is not particularly large and needs to be absorbed by means of internal medicine and functional rehabilitation exercises. At this stage, the process of absorption will result in the decomposition and metabolism of red blood cells and other substances, which will produce stimulation of the meninges, including prostacyclin, thus causing headaches. The headache is caused by the breakdown of red blood cells and other substances. For this case caused by the headache is very common, there are also times when the clot is relatively large compression of brain tissue, will also produce long-term headache phenomenon, so must be combined with the head CT timely observation.