Vestibular ataxia is caused by damage to the vestibular system and is predominantly a balance disorder. It is characterized by balance disturbances at rest and during movement. It has similarities with cerebellar ataxia, such as wide base of both feet when standing, unstable body, leaning to the side or back, and skewing when walking. However, they are generally distinguishable by obvious vertigo, nystagmus and abnormal vestibular function test, etc. 1. Sensory Deep sensation reflects the position and direction of movement of various parts of the body to the central nervous system. Etiology: (1) peripheral nerve or nerve root disease; (2) subacute joint degeneration of spinal cord, skull base malformation, myelopathy, tumor; (3) vascular disease of brainstem such as infarction, hemorrhage, multiple sclerosis, tumor; (4) vascular disease of thalamic parietal pathway or parietal lobe, tumor. 2, vestibular The vestibular system transmits balance information to the heart, causing balance responses in posture, visual regulation and spatial orientation sensation. Etiologies include: (1) vaginitis, vestibular neuritis, idiopathic bilateral vestibular disease; (2) vertebrobasilar artery stenosis or occlusion; (3) subiculum tumors. 3, cerebellar sex The cerebellum is the regulatory center of movement. The functions of these structures are in turn under the unified control of the cerebral cortex to complete. Etiology are: (1) hereditary; (2) primary or metastatic tumors; (3) vascular such as infarction, hemorrhage; (4) inflammatory such as acute cerebellitis, abscess; (5) poisoning such as alcohol, food, drugs, harmful gases; (6) demyelination; (7) developmental insufficiency or dysplasia; (8) hereditary; (9) trauma; (10) calcification; (11) malformation. 4, frontal lobe sex The lesion site is in the frontal lobe anterior, and the site of motor disorder is contralateral. Etiology are: (1) tumor; (2) inflammation; (3) vascular disease.