The causes of tinnitus in pregnant women are very many, such as changes in hormone levels, autonomic nervous system dysfunction, anemia, ear diseases and so on. 1. Changes in hormone levels: higher endocrine levels in the body after pregnancy can cause disorders of water and sodium metabolism in the inner ear, inducing endocrine diseases, such as diabetes, thyroid dysfunction, and therefore tinnitus. 2. Autonomic dysfunction: If pregnant women do not rest well, insomnia, mental stress, etc., may lead to microcirculation disorders in the inner ear, tinnitus symptoms. 3. Anemia: Anemia in pregnant women may cause accelerated heart rate, resulting in dizziness, general weakness, tinnitus and other phenomena. 4. Ear diseases: Pregnant women with cerumen impaction of the external auditory canal, otosclerosis, otitis media, etc. may also experience tinnitus. There are many causes of tinnitus in pregnant women, and it is recommended to go to the hospital in time to improve the examination and take standardized treatment according to the doctor’s instructions. Do not ignore the symptoms and delay treatment.