Redness on the face needs to be treated according to the specific causes, such as environmental factors, human factors, skin diseases, etc. After clear diagnosis, general care or laser treatment will be taken. 1. Environmental factors: if the patient is in the plateau area, due to the long-term lack of oxygen in the state, blood vessels will gradually dilate, thus forming plateau red, or colder temperatures, will also cause red blood on the face. You should do a good job of skin care, mainly moisturizing, hydration. 2. Human factors: the use of some of the irritating skin care products or cosmetics may cause capillary dilation, resulting in the phenomenon of red blood on the face, should be replaced with mild, in line with their own skin type of cosmetics, while doing a good job of face care. 3. Skin diseases: Rosacea, hormone-dependent dermatitis and other skin diseases can also cause the phenomenon of redness on the face, if it affects the aesthetic appearance, it can be treated by laser or intense pulsed light, through selective photothermal heating and coagulation of hemoglobin, shrinking and destroying the expansion of the capillaries, so as to achieve the therapeutic purpose. There are many reasons for red blood on the face, should be avoided, it is recommended to go to the hospital to improve the examination, a clear diagnosis, to give targeted treatment.