Patients with afternoon dizziness mainly consider the following causes: 1, if the patient is hypertensive disease to consider is caused by elevated blood pressure, hypertensive patients may appear in the morning or in the afternoon at a certain time of the peak blood pressure, will lead to patients dizziness, head swelling, can be measured by blood pressure to clarify, and then adjust the antihypertensive drugs; 2, patients with afternoon dizziness to consider may be related to brain fatigue, if the patient’s work is more intense, resulting in excessive brain, fatigue, and no rest at noon, there will be dizziness and dull performance in the afternoon; 3, the patient afternoon dizziness may also be related to the patient’s work environment, such as poor air circulation or a hot and stuffy environment, are prone to dizziness, dull performance; 4, if the middle-aged and elderly, also consider that it is caused by insufficient blood supply to the brain.