The common causes of nail deformation and depression are nail dystrophy and nail fungal infection. Due to the lack of vitamins and trace elements in the body due to picky eating, resulting in a lack of influencing substances in the body, nail malnutrition, nail malnutrition symptoms are nail unevenness, nail thinning, horizontal lines, white spots, easy to break, etc.. It is recommended to take oral multivitamins and eat calcium-rich foods to effectively improve the symptoms of nail dystrophy. If the nails are infected with fungus, the nails will change and become deformed, uneven, thickened and yellowed, etc. It is recommended to take oral terbinafine hydrochloride and itraconazole capsules for treatment. For those who have tinea pedis or athlete’s foot, topical application of terbinafine hydrochloride cream and miconazole nitrate cream is recommended.