Generally speaking, the nails after toe injury can be restored to the same shape as the original normal nails. The appearance of toe injury after the nails become very thick and deformed, may be in the recovery process of fungal infection, resulting in the occurrence of gray nails. At present, it can be treated by conservative treatment, surgery and other methods. 1. Conservative treatment: for the treatment of gray nails, you can choose to apply fluconazole externally, or apply ciprofloxacin cream externally and other medications, which have the effect of anti-fungal infection. These medicines have the effect of anti-fungal infection. They can effectively treat toe injuries caused by gray nails after the nails become very thick and deformed. 2. Surgery: If the deformation and thickening of gray nails is particularly serious, you can directly do surgery, using nail extraction for treatment, the pain can not be tolerated can be injected with anesthetics. After the operation, in order to prevent secondary infection, you can follow the doctor’s instructions oral antibiotics for anti-inflammatory. After the toe injury, the nail becomes very thick and deformed, there may be other reasons, it is recommended to go to the hospital in a timely manner, to clarify the cause for targeted treatment.