Dry, cracked and bleeding lips may be related to dehydration, chronic lipitis, allergies and other reasons. 1. dehydration: the human body due to insufficient drinking water or consumption, loss of a large amount of water and can not be replenished in a timely manner, resulting in a decrease in extracellular fluid and cause metabolic disorders, can appear dry cracked lips peeling bleeding phenomenon. 2. Chronic lipitis: mainly manifested as dry lips, flaking, congestion and edema, burning pain, etc., may cause dry, cracked and bleeding lips. 3. Allergy: externally applied lipstick or lipstick, etc., may cause an allergic reaction to the lips, resulting in dry cracked skin and blood. It is recommended that people with dry, cracked, skinned and bleeding lips go to a regular hospital in a timely manner to clarify the cause of the disease and standardize the treatment under the guidance of the doctor.