If a patient has a swollen ear, it is recommended that he or she go to the hospital for a timely examination, such as checking the external and internal ear canals to avoid damage to the ear canal, especially the eardrum. If the tympanic membrane is concussed or perforated, it must be treated surgically in a timely manner to avoid hearing loss or even loss of hearing at a later stage. If the outer auricle is simply swollen, it is recommended that the patient apply ice to the outer auricle within 48 hours of the injury, because ice can effectively promote capillary constriction and hemostasis, which can effectively reduce the amount of bleeding and thus achieve the purpose of reducing swelling. If it is 48 hours after the injury, it is recommended that the patient apply a hot compress to accelerate local blood circulation and thus promote the reduction of swelling. Patients are advised to pay attention to avoid serious complications.