Facial erythema, or facial capillary dilation, is divided into congenital and acquired. Common erythema is caused by persistent expansion of capillaries due to various injuries such as cold, heat, dryness and other physical factors, occupational factors and improper cosmetic care. Laser is a commonly used clinical treatment for erythrocytes, and at the same time can stimulate the collagen growth of skin dermal cells, increase epidermal thickness and denseness, so that small blood vessels are no longer visible at the same time, so that the elasticity and resistance of the skin is also significantly enhanced. The risks are as follows: 1. Laser removal of red blood is likely to cause skin destruction, the formation of ulcers, scarring or radioactive necrosis and other sequelae, there are certain risks; 2. Laser removal of red blood is a treatment method that goes against the natural laws of skin metabolism, mandatory one-time removal of red blood, may cause the rigor mortis of capillaries, the loss of elasticity of the surface skin, and may even produce lumps, pigmentation, and easy recurrence; 3, Skin damage, thinning, easy allergy, etc. After the laser red blood cells should pay attention to sun protection, because the skin surface layer is prone to aging. In addition, moisturizing and hydrating, maintenance and cleaning are very important, but also need to strengthen the nutritional conditioning and supplement sleep.