Dizziness after running on the treadmill may be due to over-exercise, wrong running posture, fasting exercise, too fast speed and other reasons. It is recommended that in the future when running according to their own situation, develop a scientific plan, so as to obtain a better exercise effect. 1, excessive exercise: running distance far more than their body can bear, or suddenly start strenuous exercise may cause sympathetic excitement, adrenaline rise, heartbeat and respiratory speed up, resulting in increased blood pressure or transient brain hypoxia phenomenon and lead to dizziness; 2, running posture error. Running often look down at the running belt may affect and stimulate the vestibular function, the symptoms of dizziness, should look ahead, to their natural visual senses; 3, fasting exercise: sports consume a lot of energy, fasting running will let the body’s energy in the process of exercise is overconsumed, after running the body blood sugar content is too low, may lead to dizziness; 4, too fast: the rhythm of cardio respiratory can not keep up with the rhythm of running This will lead to poor respiratory rhythm and insufficient oxygen in the body, causing dizziness due to lack of oxygen in the brain.