Granules on the lips, pursing the lips like a frosted feeling, may be the emergence of chronic lipitis, photochemical lipitis or lymphoid tissue proliferation lipitis. 1. Chronic lipitis: associated with mental factors or poor lip licking, lip biting habits, causing excessive keratinization of the epithelium of the lip mucosa, manifested in dry cracked lips, scaly, can easily tear off the flakes, the course of the disease can be repeated. 2. Photochemical labiitis: caused by ultraviolet ray allergy in sunlight, with obvious seasonality, spring attack, summer aggravation and autumn recession, which can be induced by some drugs or food. 3. Lymphoid hyperplasia labiitis: lymphoid hyperplasia labiitis etiology is often unknown, may be congenital genetic disorders, attacks on the lips dry and flaky or no skin, there is a yellowish, overflowing secretion from the subcutaneous overflow and then crusting. Normal lips have a smooth and elastic texture, and when abnormal changes occur, it is necessary to go to the hospital in time for examination and treatment.