Finger joints skin cracking may be related to dry weather and other physiological factors, may also be the hand eczema, ringworm and other diseases caused. 1. Physiological factors: If the weather is too dry, the body will lose water faster, resulting in dry and cracked skin at the finger joints. 2. Hand eczema: the cause may be related to heredity, hormone level changes, infection and other factors. The patient’s hand skin will appear peeling, cracking, blisters and other symptoms, may be accompanied by itching. 3. Ringworm: mainly caused by ringworm bacteria infecting the skin of the hands, damp and sweaty hands, suffering from immunodeficiency diseases and other reasons may also induce the disease. The patient’s hands will appear blisters, dry, flaky, cracked and other symptoms. The cause of dry and cracked skin at the finger joints is not unique, and it is recommended to exclude physiological factors and then go to a regular hospital to clarify the cause of the disease.