Tinnitus in the right ear, i.e. unilateral tinnitus, can be caused by the environment, ear diseases, and systemic factors. 1. Environment: living in a noisy environment for a long time, listening to songs with headphones on, etc., unilateral or bilateral tinnitus will occur. 2. Ear diseases: including acute otitis media, acute suppurative otitis media and inner ear lesions, etc., which may lead to tinnitus in the right ear. 3. Systemic factors: Tinnitus caused by systemic factors is more complex. Common ones include intracranial acoustic neuroma, vascular malformation, hypertension, hyperglycemia, thyroid insufficiency, autonomic insufficiency, etc., all of which may cause tinnitus unilaterally or bilaterally. Tinnitus can also be caused by other diseases, such as neurological factors, emotions, psycho-spiritual factors, etc. If the tinnitus in the right ear is not relieved for a long time, the patient needs to consult a doctor in time and follow the doctor’s instructions for treatment.