Lips are very dry and tight, can be seen in the dry environment, lipitis or open-mouth breathing and so on. 1. Environmental dryness: the human body is in a cold, dry environment, without timely attention to skin and lip moisturizing, skin peeling and lip dryness and tightness or even peeling, pay attention to local moisturizing. 2. Lipitis: Lips in contact with cosmetics, irritants, allergies or excessive ultraviolet radiation and other reasons can cause lipitis, dry lips, pain or burning, and even flaking or cracking. 3. open mouth breathing: such as chronic rhinitis, there are symptoms of nasal congestion, due to poor breathing leads to open mouth breathing, can cause dry mouth, dry lips. Dry and tight lips need timely hydration, keep lips moisturized to prevent dryness and cracking, if caused by pathological factors of dry lips, it is recommended to seek medical attention in a timely manner, the cause of treatment.