The common cause of headache that occurs every afternoon is considered to be neurovascular headache. It may be due to the morning work stress or excessive mental tension, at noon time did not take a nap, resulting in the afternoon brain ischemia, hypoxia symptoms, this time the patient manifested as the phenomenon of pain in the top of the head. It is recommended that you can take a nap for 10-30 minutes at noon time, and the symptoms of headache may be relieved in the afternoon. In addition to rule out whether the patient is hypertensive, the human body is a biological clock phenomenon, everyone’s blood pressure also has a biological clock phenomenon, some patients blood pressure can rise at a fixed time, so every day in the afternoon head pain is recommended to measure blood pressure, observe whether there is a phenomenon of increased blood pressure at this time.