The most common causes of pain inside the ear are acute otitis externa and acute suppurative otitis media. Acute otitis externa is an acute inflammation of the external auditory canal due to infection, trauma and other causes. The skin of the external ear canal can be seen to be red and swollen on examination, and the symptoms will improve significantly with the use of local oxyfloxacin ear drops, usually for about 3-5 days. Acute suppurative otitis media is often an inflammation of the middle ear due to bacterial infection, and its most common symptoms are ear pain, pus flow, etc. Examination of the body can see congestion and redness of the tympanic membrane, and even pus oozing out, with colds and cold as triggers. Treatment requires local treatment and antibiotic therapy. If symptoms do not improve, intravenous medication and intravenous infusion of antibiotics can be considered. Generally, symptoms will improve quickly with the above treatment, but if treatment is not timely or thorough, chronic purulent otitis media may form, even causing perforation of the eardrum, resulting in hearing damage in the. In summary, the most common causes of ear pain are acute otitis externa and acute suppurative otitis media, which generally improve quickly with local ear baths and antibiotic treatment.