Conjunctivitis may cause otitis media, which can lead to ear pain in patients. The conjunctiva is a clear membrane-like layer of tissue that covers the back of the eyelid, and the surface of the white part of the eye. Conjunctivitis is primarily a thickening and reddening of the small blood vessels in the conjunctiva when they become inflamed, and is usually caused by a bacterial or germ infection. Conjunctivitis is mainly categorized into infectious and non-infectious conjunctivitis. When a patient suffers from infectious conjunctivitis, there may be a spreading of inflammation in the conjunctival tissues, which may lead to otitis media, resulting in ear pain, tinnitus and other uncomfortable symptoms. When the patient suffers from conjunctivitis and the symptoms of earache are triggered, it is recommended to go to the hospital for examination and diagnosis in a timely manner, and under the guidance of the doctor to carry out treatment.