Vertigo, dizziness and lightheadedness are common clinical symptoms with different clinical manifestations and different treatment principles, and they are not the same thing at all. However, many doctors and patients do not differentiate between them and misuse them for a long time, which leads to misdiagnosis, misdiagnosis, and misdiagnosis of treatment. Vertigo, dizziness and lightheadedness have different manifestations. Vertigo is mainly manifested as a sense of spinning, floating, drifting or tumbling of oneself or/and external objects in a certain direction that does not exist objectively, also known as motion hallucination. It can be triggered by factors such as overwork, excitement, insomnia, menstruation or excessive smoking and drinking. It is often accompanied by spontaneous nystagmus, misalignment of objects, directional tilting, nausea and vomiting. Dizziness is mainly manifested as intermittent head heavy and unstable gait (balance disorder), mostly aggravated during movements such as walking, standing, sitting and lying, or when using the eyes. Dizziness is often characterized by a persistent feeling of dizziness and lack of clarity, accompanied by head heaviness, dullness, headache, forgetfulness, weakness and other symptoms of neurosis or chronic somatic diseases, aggravated by exertion. It is usually seen in patients with neurasthenia or chronic somatic diseases. The damaged organs of vertigo, dizziness and lightheadedness are different The damaged organ of vertigo is the nervous system between the jugular crest of the vagus of the inner ear, which is responsible for balance in subjective turning movements, and the vestibular projection area of the brain. When artificial factors such as automatic body turning, examination of the semicircular canal or certain lesions cause excessive or decreased function or bilateral loss of contralateral side, and exceed the ability of brain regulation, it will cause vertigo attacks with signs and symptoms such as nausea, vomiting, nystagmus, unsteadiness in standing or tipping; the damaged organs of dizziness are the systems related to proprioception, vision, otolithography (ellipsoidal sac and balloon of the inner ear vagus), and so on. The damaged organ of dizziness is the cerebral cortex, which is in charge of higher human activities. The overall weakening of the cerebral cortex function caused by various organic and functional diseases or long-term mental work causes a sense of persistent mental dizziness and lack of clarity. As a result, vertigo, dizziness and lightheadedness are three different clinical signs caused by different damaged organs, and if they are not differentiated, they will lead to wrong localization of the lesion, and wrong investigation and treatment will often occur, so we should be alert and pay attention to them.