The phenomenon of toenails turning over and not falling off may be related to trauma and fungal infection, which can be relieved by nail extraction treatment, anti-infection and anti-fungal treatment. 1. trauma: for trauma caused by the toenail turned over did not fall off the symptoms, the need to detach the toenail extraction treatment, and then in order to prevent infection, the need to use iodine povidone coating, and then add oral amoxicillin, cephalosporin and other antibacterial drugs anti-infection treatment. 2. Fungal infection: toenail turn over did not fall may also be related to the factors against the infection, in the case of dermatophyte infection, will violate the local nail bed of the nail plate, if necessary, to pull out the nail treatment, but also need to choose the antifungal drug treatment, can be used externally ketoconazole, econazole and other antifungal drugs, if necessary, plus the use of oral terbinafine, itraconazole, etc. to increase the effect of the drug. Appearance of toenails turned over did not fall off the phenomenon, should be handled by a professional physician, not blindly medication, so as not to produce adverse effects.