Dry cracked lips appear mouth repeatedly does not heal, you can try to give recombinant human epidermal growth factor gel to promote the healing of cracks. Usually need to pay attention to avoid local stimulation, do not lick lips, avoid eating stimulating food. Do not use irritating toothpaste, such as toothpaste containing fluoride, and it is best to rinse rather than brush, so that the foam of the toothpaste does not stick to the lips and the fissure does not heal easily, and to avoid getting food and soup on the lips. Vitamins and trace elements can be given to supplement, it is best to choose a regular hospital visit, you can check the trace elements and vitamins, can be used under the guidance of the drug. Usually eat more fresh vegetables, fruits, do not favoritism, help the healing of skin lesions.