Cracked fingers can be caused by cracked and dry skin, vitamin deficiencies, eczema, and ringworm. 1. Cracked and dry skin: due to long-term work in a dry climate, such as plateau environment, will make the finger skin due to lack of moisture, cracks, accompanied by peeling, itching and other symptoms. 2. Lack of vitamins: partiality or picky eating will lead to the lack of certain trace elements in the human body, which will lead to finger skin cracks. 3. Eczema: prolonged exposure to irritants or alkaline detergents such as soap, laundry detergent and other eczema, easy to cause finger cracks. Therefore, you should pay attention to reduce the use of chemical agents or wear gloves for protection. 4. Ringworm: caused by fungal infections on the hands, which can also lead to dry, flaky and cracked fingers. When the finger cracks, it is recommended to go to the hospital for examination and diagnosis, under the guidance of a professional doctor to choose the targeted treatment according to the actual condition.