The application of Vaseline can only play a certain role in moisturizing the skin, and is not suitable for all lip infections, usually dry flaking lip infections can be coated with Vaseline, other types of lip infections such as no obvious symptoms of dry lips, not suitable for the application of Vaseline. 1, dry flaking lip infections: the main manifestations of dry lips, chapped, flaking, and even longitudinal grooves or cleavage, accompanied by pain, etc., can be applied externally under the guidance of a doctor Vaseline can be applied under the guidance of a doctor to moisturize the lips. The main treatment for dry flaking lips is to remove the local irritants and then treat the symptoms. In daily life, it is also necessary to remove irritants, correct bad habits, maintain a balanced diet, eat more vitamin-rich vegetables and fruits, maintain a regular lifestyle and relaxation; 2. Other lip infections: such as vesicular lip infections, allergic lip infections, etc., external application of Vaseline has no significant effect. The main clinical manifestations of vesicular labyrinthitis are repeated redness, swelling, erosion, exudation and crusting of the upper and lower lips. It is recommended to use a local wet compress under the guidance of a doctor, and after removing the scabs, apply local antibiotics or hormonal ointment, and in severe cases, local hormone injection therapy. Allergic labyrinthitis mainly manifests as itching, redness and swelling in the mouth and lips, and in severe cases, allergic reactions such as blisters, vesicles, oozing and crusting, and shows a pattern of recurrent attacks. Treatment is mainly directed at allergic symptoms, and it is also important to stay away from allergens in life. If photochemical lipitis is accompanied by obvious symptoms of flaking and dry lips, shading can be done with appropriate moisturizing Vaseline, while no such symptoms are not applicable.