The appearance of red blood on the face is a manifestation of capillary dilation, which is very common in clinical practice. There are many factors that cause capillary dilation on the face, including genetic factors, rosacea, dermatitis and eczema, drug stimulation, etc. If you want to improve capillary dilation, topical medication is not effective and cannot eradicate capillary dilation, currently the main method of physical therapy is used. Physical therapy mainly includes intense pulsed light (photorejuvenation) and pulsed dye laser, etc. Intense pulsed light treatment for capillary dilation is reliable, mild and safe, but the effect is slow and suitable for large area capillary dilation. Pulsed dye laser treatment is faster and more penetrating, and is suitable for limited vasodilation. In addition, daily care is important. Wash your face after going home, do not use strong alkaline soap, and prohibit the abuse of cosmetics or drugs containing corticosteroids. It is recommended to eat less spicy and irritating food, such as hot pot, seafood, animal liver, etc.