The causes of dizziness from 4:00 pm to 6:00 pm every day include excessive mental stress, high blood pressure, cervical spondylosis and so on. 1. Excessive mental stress: If mental stress is excessive during the daytime due to work and study, patients may experience symptoms such as dizziness. 2. Hypertension: when the patient’s blood pressure suddenly rises, leading to increased pressure in the cerebral blood vessels, vasospasm and other factors, the patient will also have dizziness, headache and other symptoms. According to the specific situation of the patient’s blood pressure, we can choose antihypertensive drugs to adjust the blood pressure, so as to keep the blood pressure stable. 3. Cervical spondylosis: Patients with cervical spondylosis may experience dizziness after a day’s work. It is caused by the long time of head down, which leads to the herniation of cervical intervertebral disc and the compression of vertebral artery, resulting in insufficient blood supply to the brain and ischemia and hypoxia of brain tissues. It may be accompanied by symptoms such as hand numbness and headache. The causes of dizziness from 4:00 p.m. to 6:00 p.m. every day are many, and it is recommended that patients seek medical attention in a timely manner to clarify the causes and treat them under the guidance of a doctor.