Dry, cracked and bleeding lips can be caused by physiological factors, lack of vitamins, lipitis and other factors. 1. Physiological factors: prolonged exposure to high temperatures and dry environments, and drinking less water, can lead to the phenomenon of dry cracked and bleeding lips. The existence of tongue licking lips of bad habits, also easy to make the tongue area dry, induced cracked lips bleeding, eliminate the above triggers can be improved by themselves. 2. Lack of vitamins: prolonged partiality and picky eating, vitamin deficiency in the body, it is easy to lead to the corners of the mouth dry, cracked and bleeding. 3. Lipitis: may be related to heredity, bad habits, long-term chronic stimulation and other factors, will lead to pain, swelling, dry cracked lips, bleeding symptoms, severe localized erosion and oozing. Dry cracked lips bleeding, and exclude the physiological factors, it is recommended to consult a doctor for examination, clear causative factors, under the guidance of the doctor for appropriate treatment.