Very dry and hard skin on both sides of the fingernail is associated with conditions such as repeated friction, eczema, and ringworm. It can be relieved through life conditioning and drug intervention. 1. Repeated friction: the skin on both sides of the fingernail can be soaked in hot water to achieve the purpose of loosening. After soaking in hot water, the dry and hard skin can be removed through the use of exfoliating instruments. In order to keep the skin on both sides of the fingernail moisturized, it is necessary to apply a moisturizing type of moisturizer, such as petroleum jelly, after trimming. 2. eczema: eczema in acute attacks, may also cause patients to appear fingernails on both sides of the skin is very dry and hard symptoms, accompanied by itching, can be relieved through the use of hydrocortisone, dexamethasone and other drugs treatment. 3. ringworm: this belongs to the fungal infectious diseases, because of the skin ringworm infection and cause patients to appear fingernails on both sides of the skin is very dry and hard symptoms, can cooperate with the doctor to choose ketoconazole, clotrimazole, econazole and other antifungal drug treatment. After the phenomenon of dry and hard fingernail skin on both sides of the patient, it is necessary to reduce the local repeated friction, and at the same time give the above treatment, can improve the patient’s symptoms. The above drugs should be used according to the doctor’s prescription.