Walking for a long time headache to consider with physiological factors or some diseases such as anemia, hypertension and so on. 1. Physiological factors: walking time is too long, walking environment temperature is high, the body sweats more, the body’s blood volume is reduced, resulting in a short period of insufficient blood supply to the brain may appear headache, dizziness symptoms. In addition to poor physical condition, recent sleep deprivation and other physiological factors can also cause headaches after walking for a long time. 2. Anemia: mainly related to the reduction of red blood cells, excessive destruction of red blood cells, blood loss and other factors. When anemic people walk for a long time, headache symptoms can occur, some patients also appear dizziness, tinnitus, poor concentration, memory loss, palpitations and other symptoms after activity. 3. High blood pressure: long time walking will cause heart rate to increase, increase cardiac output, cause blood pressure to rise. Elevated blood pressure can cause headache, dizziness, nausea and vomiting and other symptoms. There are many reasons that cause headaches after walking for a long time, and it is recommended that runners who have dizziness should consult a doctor in time for examination, clarification of the cause of the disease and timely treatment.