Patients with blackened ears are often considered to be caused by infection. Perhaps patients often touch their ears with their hands after piercing them, or do not pay attention to hygiene leading to dirty water coming into contact with the area around the ears, so there will be skin mucous membrane infection, and sometimes there will be some secretions flowing out, or even blackened skin. Anti-inflammatory treatment. Patients should take oral antibiotics such as cefprozil capsules or cefixime capsules, disinfect the area around the ear hole with iodophor, and then apply Bactrim ointment for anti-inflammation and swelling, after active treatment, the patient’s condition should improve to a certain extent. Patients must pay attention to protect their ear holes from infection and try not to touch them with their hands.