Symptoms of dry lips need to be analyzed according to the patient’s age and constitution. Infants with apparently dry lips are caused by febrile illnesses and long-term diarrhea, such as pneumonia, infantile emergency rash, viral diarrhea and so on. If the child in the course of the disease suddenly appeared lips obviously dry and cracked, depressed symptoms, suggesting that the condition is aggravated, the need to send a doctor in a timely manner, can be symptomatic to the child to drink rehydration salts to alleviate. Ordinary children’s lips are very dry because they do not like to drink water, the body lacks vitamins or like to lick their lips, easy to aggravate in winter, you need to let the child usually a balanced diet, drink more water, change the habit of licking the lips, dry weather in winter can be coated with a little lip balm. High fever, diarrhea, severe vomiting will lead to dehydration, will also appear dry lips, the need for symptomatic rehydration, salt, correct ionic balance. Middle-aged and elderly people, especially women, long-term dry lips, accompanied by dry eyes, dry mouth, vaginal dryness, need to be vigilant about dry syndrome, which is an immune system disorders caused by connective tissue disease, over time will invade the lungs, once the above symptoms need to go to the hospital in a timely manner to check the spectrum of anti-nuclear antibodies to confirm the diagnosis.