Wearing earrings with redness, swelling and itching is mostly considered to be due to the discomfort caused by contact dermatitis. For allergy-prone people, if the material of the earrings such as iron allergy, when wearing earrings, will cause the body to undergo an abnormal immune response, which can lead to localized inflammatory reaction, can be manifested as ear piercing parts and the surrounding location of redness, swelling, itching and other symptoms. It is recommended to wear earrings redness, swelling, itching should immediately remove the earrings, such as the occurrence of other uncomfortable symptoms or symptoms continue to be unrelieved, should go to the regular hospital in a timely manner, a clear diagnosis, standardized treatment under the guidance of the doctor, so as to avoid delays in the condition of the body brought about by the adverse effects of the disease.