Phantom hearing is when there is no source of sound, but the ear does hear a sound, and the patient feels that the sound may be coming from the outside world, and the sound is often clearer and more real. There is also a type of hallucination that comes from sounds inside the brain. Whenever there are hallucinations, they need to be examined carefully. In addition, phantom hearing needs to be distinguished from tinnitus in the elderly. Tinnitus is often a mechanical sound that does not change much, while phantom hearing is often the sound of a person speaking and has more content. The presence of phantom hearing usually has pathological changes, and the elderly may have organic brain lesions. Such as brain hemorrhage, infection, cerebral infarction, and benign tumor, malignant tumor occupancy, these diseases may appear phantom hearing, and need to do the corresponding examination. The presence of phantom hearing also requires consideration of psychological factors, and if necessary, a professional psychiatric evaluation is required.