If patients use earplugs for a long time and continue to overuse, the following hazards will occur: 1, inflammation and infection: there may be repeated stimulation of the ear canal skin as well as friction, prone to further cause inflammation of the external auditory canal, infection, which may lead to more serious swelling and pain symptoms. 2, eczema: patients who use ear plugs for a long time may also be due to the irritating factors of the earplugs foreign body, or the ear canal aeration, drainage is not Eczema: patients using earplugs for a long time may also be irritated by foreign objects in the earplugs, or the ventilation and drainage in the ear canal is not smooth, which can easily trigger eczema in the external auditory canal, resulting in congestion and humidity in the external auditory canal, and easy to secrete mucopurulent secretions repeatedly, even with scabs and ulcers, and patients will experience repeated itching in the ear area. 3, affecting the recovery of the disease: when patients are suffering from chronic suppurative otitis media and other diseases, the excessive use of earplugs is more unfavorable to the recovery of otitis media.