Baby face red blood is very obvious, may be thin with the stratum corneum, capillary dilatation, facial skin inflammation and other reasons. 1. thin stratum corneum: the baby face of the stratum corneum is relatively thin, when exposed to sunlight and other adverse stimuli, can cause capillary dilatation, can be manifested on the face of red blood obvious. 2. capillary dilatation: infant facial redness can be seen in primary capillary dilatation, may be related to genetic factors, usually with a family genetic history. 3. Facial skin inflammation: under the stimulating effect of inflammatory factors, it can cause capillary dilatation and obvious redness. Parents are advised to take their children to the hospital in time to clarify the cause, and if treatment is needed, standardized treatment should be carried out under the guidance of doctors.