There are many causes of tinnitus, vertigo, nausea and vomiting, as follows: 1. Ear diseases: such as sudden deafness, vestibular neuritis, and possibly due to Meniere’s disease. 2. Intracranial diseases: such as meningioma and auditory neuroma. 3. Others: some patients are caused by decreased vestibular function, and some patients have vagal fistulas due to chronic suppurative otitis media. After this occurs, it is recommended to visit the department of otolaryngology and neurology, where audiometric testing, otoscopy, head MRI, and middle ear mastoid CT examination can be done. Through these auxiliary examinations, combined with the doctor’s clinical experience, it helps to determine the condition, make a clear diagnosis and carry out targeted treatment.