Nails inside the depression yellowing may be related to ringworm of the nail, nail dystrophy and other factors, according to the different conditions of the symptomatic treatment. 1. ringworm of the nails: ringworm of the nails is due to dermatophytes invade the nail plate or nail bed caused by nail lesions, the patient’s nails will show cloudy, thickened, brittle, sunken, yellow, etc., can be recommended by the doctor orally itraconazole capsules, terbinafine tablets, etc., or topical terbinafine hydrochloride cream, miconazole nitrate cream and other drugs treatment. 2. Nail dystrophy: usually refers to the lack of vitamins and trace elements, the nails will show unevenness, yellowing, etc. Daily to avoid contact with detergents or stimulating substances, can be in the doctor’s advice to choose tacrolimus ointment, carbotenoids cream and other topical medication, and daily to maintain a balanced diet. Daily to do a good job of nail protection, maintain hygiene and clean nails, avoid contact with corrosive or irritating objects, found that the nails sunken yellow, actively go to the hospital for examination and symptomatic treatment.