Sleep too long to appear headache phenomenon, which is mainly due to sleep too long caused by. The human body in the process of sleep is the vagus nerve is in the state of excitation, then the whole body’s blood flow rate is slow, the whole body’s blood vessels are in the state of expansion, the blood vessels in the brain is also in the state of expansion, sleep too long will lead to a reduction in the blood supply to the brain, because of the expansion of blood vessels in the brain as well as the slow speed of blood flow, resulting in the phenomenon of insufficient blood supply to the brain, which will be the brain’s blood supply and oxygen deficiency for a long time, the patient will have a headache symptoms. As well as the lack of oxygen for a long time, the patient will have headache symptoms. It is recommended that the patient’s sleep time should be adjusted appropriately, so that the best sleep time is to wake up without headache symptoms.