Stuffy ears and buzzing sound may be caused by cerumen embolism, noise deafness, secretory otitis media and other reasons. 1. Cerumen embolism: The ear feels stuffy due to cerumen blockage in the external ear canal caused by excessive cerumen secretion or impeded cerumen expulsion from the external ear canal. When the cerumen rubs against the tympanic membrane, it will cause a buzzing sound. 2. Noise deafness: Due to prolonged or instantaneous noise stimulation in the environment, which may cause damage to the cochlear hair cells, the patient will experience stuffy ears and buzzing sound. 3. Secretory otitis media: If you suffer from secretory otitis media, it can lead to fluid in the middle ear cavity and tympanic membrane invagination, the middle ear cavity is in a negative pressure state, which can be manifested as stuffy ears and buzzing sound. If the ear has been stuffy and buzzing sound, you should go to the hospital in a timely manner, to clarify the cause of the disease, and follow the doctor’s instructions to standardize the treatment.