Nail thinning and softening may be caused by nutritional factors, fungal infections, nail bed inflammation and other factors. 1. Nutritional factors: some patients due to picky eaters or diet irregularities lead to unbalanced intake of nutrients, micronutrient deficiencies in the body, which can lead to thinning and softening of the nails, the usual nutritional diet, more dairy products, seafood and other nutrients containing calcium and zinc and other foods. 2. Fungal infection: thinning and softening of the nails is often considered clinically ringworm or nail fungal disease, which is due to the nail plate and under the nail by the skin superficial fungal infections caused by the nails will become thicker, become dirty, but also thinning and softening, should be timely antifungal treatment. 3. Inflammation of the nail bed: If the nail matrix or the nail bed is inflamed, making the nails grow or crawl badly, it will lead to thinning and softening of the nails. Nail thinning and softening may also be due to congenital factors, tumors and other causes, it is recommended to go to the hospital in a timely manner, improve the examination to clarify the cause of the disease, under the guidance of the doctor to give targeted treatment or treatment.