The causes of dry white lips seem to be a layer of cream, which can be roughly divided into physiological factors and pathological factors. Physiological factors are mainly considered to be too little water; pathological factors include vitamin deficiency, chronic desquamative and photodermatitis lip, dry syndrome, diabetes, etc. It is recommended to go to a hospital for diagnosis and treatment. It is recommended to go to the hospital in time to get a clear diagnosis and then treat the symptoms. I. Physiological factors: When the body is dehydrated, there will be dry mouth, dry tongue and dry lips, which may be manifested as dry white lips, as if a layer of cream. In this case, timely hydration can be done without other special treatment. Second, pathological factors: 1, vitamin deficiency: when the body lacks B vitamins or vitamin C, there will be lesions of the lip mucosa, resulting in dry, cracked and flaky lips, while manifesting as dry white lips, as if a layer of cream. You can take oral multivitamin tablets to maintain nutritional balance so as to relieve clinical symptoms; 2. Chronic flaking and photochemical lip inflammation: the main causative factors may be related to long-term adverse stimulation of temperature, radiation and mechanical friction factors, such as dry climate, UV light stimulation, wind blowing, cold or bad habits of biting and licking lips. Usually, the symptoms of lower lip are more serious, and the lips can appear dry and white as if a layer of cream. You can also follow the doctor’s instructions to use Levanox solution, boric acid solution and other wet compresses, you can also use antibiotics or hormonal ointments, such as tretinoin acetate cream, etc. applied to the affected area; 3, dry syndrome: the disease is mainly caused by immune dysfunction, patients will appear dry lips and different degrees of desquamation, which is manifested as dry white lips as if a layer of cream. In addition, the patient will also have dry mouth, dry eyes and other lesions of bone and joint connective tissue. In terms of treatment, immunomodulatory therapy is mainly used, and you can take Paeonia lactiflora capsules as prescribed by the doctor to relieve clinical symptoms; 4, diabetes: some diabetic patients also have symptoms such as dry mouth, dry red lips, cracking and flaking, which can be reflected as dry white lips like a layer of cream. In addition, diabetic patients also have typical symptoms such as elevated blood sugar, drinking more water, urinating more and losing weight. Diabetic patients need to take oral metformin-based hypoglycemic drugs to control blood sugar under the guidance of a doctor in order to fundamentally relieve the local symptoms of the lips and pay attention to the moisturizing of the lips.