Dry red tight lips above, can be considered with environmental factors, lipitis (such as exfoliative lipitis, plasma cell lipitis) or dry syndrome and other reasons. 1. Environmental influences: the human body can be in a cold, dry environment, and local moisturizing is not in place when the lips are dry, tight, it is recommended to apply lip moisturizing products in a timely manner to keep the lips moisturized. 2. Lipitis: such as exfoliative lipitis can occur on the upper lip, lip red edge with inflammation, dryness, crusting, scaling off the base of bright red smooth, and later gradual scaling; plasmacytoid lipitis may be related to the taking of drugs, such as tetracycline, the upper lip and the surrounding area can be persistent varnish-like glossy red plaques, prone to vesiculosis, scabbing, can also be hypertrophic. 3. Dry syndrome: belongs to the chronic systemic autoimmune disease, can appear oral symptoms, mucosal dryness as the main manifestation of the red edge of the lips can be red, dry and flaky, the corners of the mouth are easy to crack. Lip dryness, tightness and other abnormalities around the lips, it is recommended to consult a doctor in a timely manner, the use of drugs need to comply with medical advice.