White spots on fingernails are usually caused by lack of nutrition or other factors. 1. Lack of nutrition: for example, vitamins, zinc, etc., leading to abnormalities in the structure of the synthetic nail plate, refractive changes may be manifested as white spots. Malnutrition of the population to supplement nutrition, to correct bad eating habits, do not favoritism. 2. Other factors: for example, the nail plate itself trauma or fungal white nails can cause white nails; fungal infection can cause gray nails, gray nails manifested as nail color change, nails become thicker, white and so on. Nails with white spots may have other reasons, such as nail psoriasis, nail lichen planus, etc., if through a reasonable and balanced diet, fingernails with white spots symptoms are not relieved, or accompanied by other symptoms, you should go to the hospital in a timely manner, clear reasons for targeted treatment.