Nail fungus is generally an inflammation of the nail groove area caused by bacterial invasion and infection after the nail is embedded in the nail groove and locally broken. In this case, active anti-infection treatment is needed, generally commonly used drugs are iodine tincture, can also be applied topically erythromycin cream or mupirocin cream, can also be used topically ezacridine lactate solution, can also play a certain role in sterilization. If a local purulent infection is formed, treatment by incision and drainage should be considered, and oral antibiotics can also be combined to strengthen the anti-infection. If pus accumulates under the nail, nail extraction should be considered. It is important not to over-trim the nails and to wear more sports shoes and flat shoes to avoid wearing uncomfortable shoes.