The outer edge of the auricle is swollen, mainly including the following diseases: 1. Pseudocysts of the auricle. This disease is mainly due to mechanical stimulation and extrusion of the auricle, resulting in local microcirculation disorders in the auricle, causing sterile inflammatory exudation between tissues. The hemispherical painless cystic bulge of the auricle can be seen clinically, with clear borders and fluctuating sensation on pressure, but no pain, and yellowish fluid can be penetrated when punctured. Once this condition is diagnosed, surgery is recommended. 2. Septic chondromalacia of the auricle. This disease is very serious and patients can usually see diffuse redness and swelling of the entire auricle, with significant pain on pressure and a localized burning, aching sensation. Patients may have a marked increase in body temperature, and once an abscess forms locally, there is a marked fluctuating sensation on pressure. Once this condition is diagnosed, anti-inflammatory symptomatic treatment with adequate antibiotics is required, and if an abscess is formed, symptomatic treatment such as incision and drainage is required.