Dry and cracked elbows may be caused by physiological factors such as lack of water in the skin, or it may be caused by atopic dermatitis, dry eczema and other diseases. 1. Physiological factors: the dry climate may trigger the body water loss, skin dehydration, which in turn leads to elbow dry cracks, peeling. 2. Atopic dermatitis: common in the elbow, popliteal fossa, neck, etc., the clinical symptoms of dry skin, papules and pimples, etc., and some patients may have elbow cracking and peeling symptoms. The cause of the disease may be genetic, immune abnormalities, environmental factors. 3. Dry eczema: the typical symptoms are dry skin, cracking, flaking, etc., which can occur in various parts of the body. The cause may be related to skin aging and excessive cleaning. There are many reasons for dry and cracked skin on the elbow, and after excluding physiological factors, patients are advised to seek medical examination to clarify the cause of the disease.