Dry and cracked hands may be caused by human factors or environmental factors that lead to dehydration of the skin on the hands, and may also be caused by fungal infections, hand eczema and other skin diseases. 1, hand skin dehydration: patients do not pay attention to hand care, dry environment or older may cause dehydration of the skin on the hands, thus dry and cracked. At this time to moisturize and hydrate the hands, you can use glycerin or petroleum jelly applied to the hands to play the effect of moisturizing, you can also use some hand cream; 2, fungal infection: manifested as well-defined erythema, flaking, accompanied by itching. Go to the hospital dermatology through fungal microscopy can be diagnosed by seeing long and thin mycelium. Treatment requires the use of antifungal drugs as prescribed by the doctor; 3, hand eczema: may be related to hand contact with various external stimuli. Slow onset, manifested as dry dark red spots on the hands, local skin hypertrophy, often forming fissures in winter. Treatment can follow medical advice on the use of topical glucocorticoids, and pay attention to hand skin moisturization. Dry and cracked hands should avoid scratching and keep the skin clean to avoid infection.