Gray nails, i.e. nail fungus disease, does not necessarily have to remove the bad nails cleanly, and it is mainly treated with medication, and the removal of diseased nails applies to cases such as poor drug treatment. Gray nails are mainly treated with medication, including topical medication such as 5% amorolfine and oral medication such as terbinafine and itraconazole. Commonly used methods to remove diseased nails include surgical nail extraction or nail removal surgery, etc., which can be required according to the condition, and it is mainly applicable to some gray nails, such as the effect of drugs is not good, such as the thickness of the nail plate >2mm, as well as when accompanied by ingrown nails and other conditions. Got gray fingernails, it is recommended to seek timely medical treatment, diagnosis and treatment. The use of specific drugs, should be under the guidance of the doctor.