The head feels empty for the following reasons: 1. Consider that it is due to the lack of rest, long-term stay up late, must pay attention to more rest, try to avoid staying up late, do not give themselves too much pressure. 2. It is possible that their spirit is in a state of tension, so usually pay attention to relax themselves, can be relieved by doing sports, not only to improve their immunity, but also to relax themselves. 3. The symptoms may be caused by insufficient blood supply to the brain, usually pay attention to replenish the blood. 4, may be caused by their own blood pressure abnormalities, such as blood pressure is too high, will allow people to produce these symptoms, usually must control their blood pressure, try to avoid elevated blood pressure, try to avoid eating high-fat food, but also to maintain a stable mood, mood is also very easy to cause blood pressure rise.