The usefulness of cotton plugs for nail infections is generally analyzed objectively according to the specific situation of the patient with nail infections. If the nail is embedded in the flesh of the nail, the cotton can be inserted shallowly into the gap between the nail and the flesh to avoid repeatedly stimulating the local buds of the nail to cause aggravation of the symptoms of nail infection. If the patient’s nail infection is heavy and has been accompanied by abscess formation, then simply by plugging the cotton is not able to promote the local inflammation to subside. Patients need to perform abscess incision and drainage as soon as possible, strengthen local anti-infection treatment, and if necessary, perform toenail removal, nail bed repair, petroleum jelly gauze coverage, and local sterile gauze coverage. The local inflammation of the nail can be completely resolved in about two weeks and the nail can grow back.