Nails with small splits may be caused by onychomycosis, periungual warts, iron-deficiency anemia and other diseases, and can be improved by general treatment, medication, physical therapy and other ways. 1. Nail fungus: Nail fungus may be the cause of nail fungus, the patient should improve the hygiene habits, need to follow the doctor’s instructions to apply amorphophane powder, cyclopamine and other drugs, combined with oral itraconazole and other drugs. 2. periungual warts: the nails have a small fork may be caused by periungual warts, the patient can take liquid nitrogen freezing, laser treatment, etc., to help destroy, ablation of warts, to achieve the purpose of repairing the nails. In addition, you can also follow the doctor’s instructions for the external use of salicylic acid, imiquimod and other drugs, which can help to peel off the keratin, improve the nail symptoms. 3. Iron deficiency anemia: nails may be small forked iron deficiency anemia, patients need a balanced diet, it is recommended to follow the doctor’s prescription oral ferrous gluconate, inorganic iron ferrous sulfate and other drugs to help increase the body’s iron storage, promote the recovery of the disease, and improve the symptoms of the nails. There are many reasons why nails have small forks, it is recommended that patients seek medical examination to clarify the cause of the disease, with the doctor for standardized treatment.