If there is a headache caused by insufficient cerebral blood supply, you need to use the following methods to quickly alleviate: 1, first of all, the patient should be instructed to lie down, because after lying down, you can effectively increase the cerebral blood perfusion, you can to some extent alleviate the cerebral blood supply insufficiency, caused by the headache. 2, we should closely monitor the blood pressure, and if the conditions allow, you can also take about 500mL of saline water orally. Because oral salt water can increase blood volume, after increasing blood volume can also relieve the cerebral blood supply insufficiency, thus further relieving the headache symptoms. 3, if the above conditions and measures can not make the cerebral blood supply insufficiency caused by headache can be relieved, if necessary, you can also oral painkillers, such as ibuprofen extended-release capsules, and so on.