Finger skin cracking old bad mostly considered chronic eczema, tinea cruris, etc., need to be clearly diagnosed, choose the appropriate drugs, such as antifungal drugs, moisturizers, glucocorticoid drugs, etc., for treatment. 1. Chronic eczema: finger skin cracking old bad may be related to chronic eczema, can be used externally with urea ointment to dissolve, soften keratin, combined glucocorticoid therapy, such as halometasone cream, mometasone furoate ointment. 2. Tinea cruris: scaly keratinized tinea cruris can lead to rough, thickened, flaky and cracked skin. After the diagnosis of this disease, you can use topical antifungal drugs, such as naftifine ketoconazole, miconazole, etc.; if necessary, oral antifungal treatment, such as itraconazole. It is recommended that patients go to a regular hospital, after diagnosis under the guidance of the doctor reasonable medication, not blindly self-medication, so as not to delay the condition.