Repeated ear itching, running water, crusting, may be caused by the external auditory canal eczema, chronic otitis externa and chronic suppurative otitis media and other diseases, can be for the cause and condition to be anti-allergic drugs, antibacterial drugs and topical antipruritic drugs and other drugs to treat. 1. Eczema of the external auditory canal: the cause of this disease is not yet clear, may be related to perverse reactions, neuropsychiatric factors and endocrine factors. Patients often have itching, running water and crusting in the external auditory canal. For treatment, avoiding triggers after identifying them, systemic treatment should be anti-allergic drugs, such as loratadine, cetirizine and so on. Itching is obvious, can be appropriate to be glycerin lotion external coating. 2. Chronic otitis externa: patients with chronic inflammation of the skin and subcutaneous tissues of the external auditory canal due to infection, environment, local trauma and other reasons. Patients often have ear itching, ear stuffiness and a little secretion and other manifestations. At this time, hydrogen peroxide can be used to clean the external auditory canal, local application of erythromycin ointment or levofloxacin ear drops. 3. Chronic purulent otitis media: acute otitis media treatment is not timely or improper use of medication, can lead to chronic disease. The patient’s ear is often itchy and mucous, mucopurulent secretions, secretions dry and become scabs. Antibacterial drug treatment can be given, such as hydrogen peroxide ear cleaning with levofloxacin ear drops, oral cefixime, amoxicillin and other drugs to fight infection. Repeated itchy ears, running water, scabs, it is recommended to consult the hospital as soon as possible, systematic examination to clarify the diagnosis, and follow the doctor’s instructions to standardize the use of drugs and treatment.