Toenail long crooked, if it is caused by trauma, most with the nail bed repair can be improved; if it is a fungal infection, antifungal treatment; if iron deficiency anemia, pay attention to supplemental iron, strengthen the nutrition and so on. 1. Trauma: If the previous trauma impact or small shoes extrusion, may cause toenail long crooked, most of the self-repair can be improved, pay attention to avoid infection, wear loose shoes. 2. Fungal infection: ringworm of the nails, commonly known as “gray nails”, is caused by dermatophyte infection, need to take oral plus topical antifungal drugs, such as terbinafine tablets, itraconazole tablets, terbinafine cream, etc., adequate amount of full course of treatment, can be improved. 3. Severe iron deficiency anemia: spatulate nail can be treated with oral iron supplements, such as iron dextrose, ferrous gluconate, etc., and appropriate supplementation of vitamin C. In addition, calcium deficiency may also cause toenail abnormality, and appropriate supplementation of calcium and vitamin D3. Toenail long crooked, you need to go to the hospital, identify the cause of the disease and then treatment, drugs should be applied under the guidance of a doctor.