Finger nails are too thin and soft, may be related to nail malnutrition, onychomycosis, nail lichen planus, in the absence of a clear cause, the main attention to strengthen the nutrition. 1. Nail malnutrition is a lack of nutrients in the nails that leads to softening and thinning of the nail bed, in daily life, we must take some food rich in protein, trace elements and vitamins, such as milk, eggs, fish and shrimp, as well as vegetables, fruits and so on. 2. ringworm of the nail is due to nails infected with ringworm and lead to a kind of disease, in the early stage of the disease will be manifested as nails thinning and soft, later on is mainly to thicken the main, by giving antifungal drug treatment, the nails can be restored to normal, for example, external use of naftifine ketoconazole cream. 3. Nail lichen planus usually exists together with other skin lichen planus, in the clinic, it is mainly manifested as nail plate thinning, atrophy, or even lack of, in the treatment of glucocorticosteroid drugs (prednisone tablets), retinoids (Avicenna) and other treatments. Due to different causes, different treatment methods, specific cases must be timely consultation and improve the relevant examination, and then symptomatic treatment.