Thinning and softening of nails may be caused by malnutrition, nail fungus disease, brittle nail syndrome, etc. Patients can improve their condition through general treatment, medication and surgery. 1. Malnutrition: Long-term malnutrition, caused by calcium and other trace element deficiency may cause this kind of situation, the patient to strengthen the dietary nutrition, eat some high calcium, high protein food, such as soybean products, milk, eggs, beef, etc., and usually also strengthen the exercise, more outdoors in the sun, to promote the absorption of calcium and so on. 2. Nail fungal disease: patients with nail fungal disease can use local topical drugs under the guidance of the doctor, such as amorphophallus powder, cyclopyrrolidine cream, etc., or oral terbinafine, itraconazole, fluconazole and other systemic treatment. For patients with more serious symptoms, surgical treatment such as nail extraction or nail removal can be performed to avoid further spread of the disease. 3. Brittle nails: patients should do a good job of hand care, to avoid local physical stimulation, to avoid long-term immersion of the hands in water, avoid digging hard objects with fingernails. Patients can also follow the doctor’s instructions to take ferrous sulfate, iron dextrose, vitamin A, calcium carbonate, vitamin D and other drugs for treatment. It is recommended that patients strictly follow the doctor’s instructions to use medication, actively cooperate with the doctor’s treatment, and also pay attention to the observation of nail changes, once the symptoms worsened or other uncomfortable reaction, should be timely medical treatment.