The reasons for dry and cracked hand skin usually include: hand skin dehydration, hand eczema, fungal infections, etc. There are different treatments for different reasons. 1. Dehydrated hand skin: For dry and cracked skin caused by dehydrated hands, you should pay attention to the skin care of the hands in your daily life, and you can use glycerin or hand cream to moisturize your hands. 2. Hand eczema: usually has a lot to do with contact with alkaline detergents, manifested as dry, dark red spots on the hands, often forming cracks in winter. It can be treated with topical glucocorticosteroids under the guidance of a professional doctor, and attention should be paid to reducing contact with allergenic substances and moisturizing the skin of the hands. 3. Fungal infections: related to fungal infections, often manifested as well defined erythema, dry cracking, mostly accompanied by itching, can be diagnosed by mycoscopy to the mycelium, the treatment needs to comply with the doctor’s instructions to use antifungal drugs such as terbinafine, itraconazole. In conclusion, dry and cracked skin on hands can have multiple causes and should be treated according to the different causes. It is recommended to consult a doctor in time to avoid delaying the condition.