There are few patients who visit the dermatology department for skin disorders and are finally diagnosed with diabetes after poor results from internal and external treatment. In some cases, the disease is delayed, and in some cases, it even progresses to unmanageable levels such as life-threatening. Some people find it unbelievable that diabetes is so closely and seriously related to skin diseases? Why should they be compared to each other? With the popularity of diabetes education, many dermatologists and patients are aware that repeated itching of the skin that does not heal should be promptly ruled out by an endocrinologist for possible diabetes. Due to metabolic disorders, high blood sugar, high urination, and damage to microvasculature and peripheral nerves, diabetic patients often suffer from chronic dehydration, hypoxia, and malnutrition of the skin mucosa, which is drier, less elastic, and thinner than the average person’s body surface, with reduced regenerative capacity and barrier to infection, so it is not surprising that they are prone to many skin diseases. Clinically common skin diseases in diabetic patients are: 1. septic infection: mainly boils and carbuncles caused by Staphylococcus aureus and streptococcus infecting hair follicles, which can recur one after another. 2, fungal infections: there are ringworm, ringworm of the hands, ringworm of the femur, ringworm of the nail caused by Trichophyton; there are stomatitis, vaginitis, and pachymeningitis caused by Candida, which are likewise good and bad and difficult to cure. 3, pruritus: including generalized itching and restricted itching, of which vulvar itching is more common in women. The skin will be constantly scratched due to itching causing the skin to be covered with scratches and blood scabs, eventually leading to mossiness. 4.Pigmented spots on the front of the shin: In patients with disease duration of more than five years, there may be garden-shaped or oval-shaped atrophic light brown spots on the front side of the calf, which are caused by capillary rupture and iron-containing hemoglobin deposition. More men than women. 5, diabetic foot: hyperglycemia leads to lower limb vascular, neurological lesions, once the skin is slightly broken, infection and not timely perception or treatment, will quickly form ulcers, gangrene, and eventually have to do amputation treatment, resulting in physical, psychological double blow to the patient, the quality of life greatly reduced, and in serious cases, even life-threatening. 6, diabetic blister disease: seen in patients with prolonged illness and poor glycemic control, characterized by the end of the limb epidermis with transparent blisters of varying sizes, containing clear, bright plasma, similar to a burn blister, will disappear on its own, but if rubbed may be secondary to infection. 7.Other clinically occasional: diabetic progressive lipid necrosis, diabetic yellow tumor, capillary fragility increased erythema, purpura, sclerotic skin edema, etc. Patients with diabetes mellitus with skin disease should first monitor the fluctuation of blood glucose, and at the same time, the condition will be controlled quickly with a two-pronged approach of herbal medicine and western medicine. Western medicine is used to lower blood sugar mainly, but the effect of improving skin symptoms is not satisfactory. We add Chinese herbal soup for internal use and external washing through the combination of Chinese and Western medicine, and the clinical effect is satisfactory. While actively controlling blood glucose and improving symptoms, diabetic patients must also pay attention to personal hygiene by bathing regularly, changing clothes, cutting hair and nails. For the elderly and people with dry skin, bathing once or twice a week in winter is enough, too often the skin will become more and more dry, but aggravate the scratching symptoms. In normal life, pay attention not to scratch the skin; be careful of hot water burns; do not use public towels, footbaths, slippers and other household items; do not trim finger and toe nails too short to prevent the occurrence of nail fungus; try to avoid mosquito bites and trauma. In case of ulcers, do not treat them yourself, but go to a qualified specialist for examination and treatment.