Erythroderma, a manifestation of capillary dilation, also known as capillary dilation, may be caused by a variety of factors such as genetics, pregnancy, medications or viral infections. Since the cause and extent of the condition varies from patient to patient, treatment options may vary. If genetic factors do not affect the aesthetics of the condition and there is no pain, itching, or other uncomfortable symptoms, the condition may be treated without treatment, or general treatment or physical therapy may be used to improve the symptoms. For pregnancy and medications, the symptoms will be relieved gradually after delivery and discontinuation of medications. For those caused by diseases, prompt medical treatment is required. Common treatment methods are as follows: I. General treatment: 1. Skin care: ultraviolet light is the triggering factor, patients avoid exposure to the sun in daily life, and need to use sunscreen, sun protection clothing, umbrellas, etc. when going out. Patients with too thin stratum corneum may also cause, so pay attention to the choice of mild skin care products, avoid skin care products or cosmetics containing allergenic and irritating ingredients. Pay attention to the water temperature when washing the face, avoiding too cold or too hot to avoid damage to the stratum corneum; 2. Dietary care: spicy and irritating foods such as chili, pepper and garlic can stimulate capillary dilation and induce aggravation of symptoms; if the patient has a history of food allergies, he should also avoid related foods. Second, physical therapy: 1, mainly pulsed dye laser, intense pulsed light, electrocautery, freezing, etc. through physical means to directly destroy the abnormally dilated capillaries to achieve the purpose of treatment. However, minimally invasive surgery also has certain risks, and a few patients may have local skin redness, blistering and other adverse reactions after treatment; 2. For capillary dilation combined with other diseases, such as arteriovenous fistula, vascular malformation, etc., can also be taken to inject sclerotherapy, venous vascular radiofrequency treatment, etc. Third, surgical treatment: for larger diameter vessels with such cases, surgical treatment can be taken according to the clinical condition.