If you have pain, itching and swelling in the ear, it is recommended to go to the ENT department to examine the ear canal with an otoscope, and the following diseases may appear. 1. Otitis externa, which may be inflammatory infectious otitis externa or fungal infectious otitis externa, can be seen clinically as local redness and swelling of the ear canal, irritation of a large amount of secretions in the ear canal, or there may be regular manifestations such as pus flowing inside the ear canal, it is recommended to do bacterial culture of the secretions as well as It is recommended to do bacterial culture of secretion and fungal smear examination. If it is inflammatory infection leading to otitis externa, antibiotic ear drops and oral antibiotics can be applied for symptomatic treatment. If it is fungal otitis externa, antifungal ointment can be applied to the ear canal to relieve the symptoms.2. Eczema of the external ear canal, accompanied by infection of the external ear canal, is manifested by special itching of the external ear canal, yellow water, flaking in the external ear canal, and thickening of the skin of the external ear canal. If there is local infection, it may be painful and swollen. You can apply anti-allergy ointment in the ear canal and take antihistamine medication orally for symptomatic treatment.