1, the facial skin is very thin, the skin barrier function is relatively weak, sensitive to external stimuli; 2, the face is directly exposed to the outside world, the slightest carelessness will be stimulated by pollen, dust mites, ultraviolet light, high temperature, dry heat, cold pathogenic factors. 3, Chinese medicine believes that the head position is the highest, Chinese medicine said “is located in the Yang position”, the wind (caused by many factors similar to the face of wind evil) for Yang evil, easy to attack the Yang position, so the face is prone to morbidity. I treat facial atopic dermatitis mainly from the perspective of clearing lung heat, dispelling wind and relieving itching, with obvious results. Therefore, facial dermatitis is identified by Chinese medicine as lung heat evidence (patients should not have doubts when they see this diagnosis).