Cracks on the hands and feet may be caused by physiological factors such as skin dehydration, but also palmoplantar pustulosis as well as ringworm and other diseases. 1. Physiological factors: Skin dehydration, dry climate and other physiological factors will trigger dry skin, may appear peeling, cracks. 2. palmoplantar pustulosis: the cause of its formation and local infections, genetics, stress and other factors related to the patient’s hands and feet will appear erythema, hyperkeratosis, as well as pustules, desquamation and other symptoms, some patients may have cracks on the hands and feet. 3. Tinea pedis: fungal infection can lead to tinea pedis, and the patient’s skin will appear blisters, scales, cracks and so on. The causes of cracked hands and feet are more, after excluding physiological factors, it is recommended that patients seek medical examination to clarify the cause of the disease.