The person can be very sensitive and resistant to all kinds of unsatisfactory things. The fistula test is positive if it induces vertigo and eye deviation. If the fistula is blocked by pathological tissue, it may be negative. Vestibular function is generally normal. As well as MRI, otoscopy, etc., you should go to the ear department of a regular hospital for timely examination and targeted treatment. 1. Hot and cold test: an examination method to induce and observe the vestibular response by stimulating the semicircular canal through temperature. It is done by stimulating the external auditory canal with cold or heat, and the temperature change affects the external semicircular canal through the tympanic membrane, tympanic chamber and bone wall, and the specific gravity of the endolymphatic fluid changes due to heat expansion and cold contraction, resulting in the convection phenomenon of “hot rise and cold fall” of the endolymphatic fluid, and the final roof then deflects and stimulates the jugular ridge to cause nystagmus. 2, over the finger test: is used to check whether the vestibular system is pathological a method. Abnormal results: Peripheral vestibular lesions are characterized by a simultaneous deviation of the hands to the lower side of the vestibular function, in the same direction as the tilt, and in the opposite direction of spontaneous nystagmus. Cerebellar lesion overpronation is characterized by deviation of the affected side of one hand to the affected side. 3. Bitewing auditory nerve examination: including hearing examination and vestibular function examination, which is used to determine whether the cochlea and vestibular nerve are diseased. Hearing examination includes tuning fork test examination, table sound test, Weber test examination method, Renne test; vestibular function examination includes closed-eye walking test, walking test, displacements nystagmus examination method, closed-eye difficult to stand sign, nystagmus examination, finger finger test, rotation test, in situ stepping test.