Causes of dry and tight lips are mainly physiological reasons such as less water in the body, and pathological reasons such as diabetes, uremia, etc., need to be specifically analyzed. 1. Physiological reasons: mostly related to the season and the external environment, especially the alternation of summer and autumn or autumn and winter seasons, the environment is relatively dry, there will be dry and taut lips, if there is no abnormal feeling on the touch, it means that it is just dehydrated, to drink more water and apply lipstick, can play a moisturizing effect, effectively prevent moisture loss, so that dry and taut lips to alleviate the situation. 2. Pathological reasons: the symptoms of dry and taut lips may be related to diabetes, uremia and other diseases, these patients urinate more, the body loses too much water, easy to cause dry mouth, by drinking more water, and can not alleviate the symptoms, you need to go to the hospital in time to check, clear diagnosis and timely treatment. Dry and tight lips may also be other reasons, when drinking water can not be relieved, it is recommended to consult a doctor in a timely manner, after clarifying the cause of the disease, follow the doctor’s instructions for treatment.