There are several reasons for occasional dizziness: First, patients with Meniere’s disease have dizziness due to balance dysfunction, accompanied by hearing loss and tinnitus, which can be clearly diagnosed by ENT examination. Second, patients with cerebral artery lumen narrowing and arterial systolic-diastolic dysfunction, resulting in inadequate blood supply to the vertebrobasilar artery, may experience dizziness due to inadequate blood supply to the brain, which can be clearly diagnosed by performing head vascular ultrasound or cerebral angiography. Thirdly, when tumor lesions occur in the cerebellum, the balance function of the cerebellum is damaged and the patient will become dizzy, especially when standing with eyes closed. Fourth, when the patient has liver failure, kidney failure and other diseases, resulting in the lack of nutrients required for cerebral nerve metabolism, the patient will become dizzy, and liver function and kidney function tests can clarify the diagnosis.