Dirt in the crack of the toenail can be cleaned up by pulling out, wiping, and cutting the toenail. 1. Pull out: you can use a hard object with a pointed tip to pull out the dirt inside the toenail, avoid scraping the skin when pulling out. 2. Wipe: you can use a long, thin cotton swab dipped in alcohol to wipe repeatedly, generally clean the dirt. If necessary, you can soak the toenail in warm water, after the dirt is softened, it will be easier to wipe off. 3. Cutting toenails: the most direct way is to cut off the toenails, after cutting off the toenails, the dirt can be wiped off. It is recommended that patients should be more careful when handling the dirt to avoid secondary infection when the skin is broken, once the skin is broken, iodophor and other drugs should be applied in time to prevent infection. If the dirt in the toenail has a special color and smell, or secondary infection occurs after cleaning, you should go to the hospital for treatment.