The dermatology clinic, facial dermatitis patients more and more, many patients are to go to several hospitals dermatology or beauty department, repeated treatment many times, the effectiveness is not very big, some drugs used, but will aggravate, why? First of all, the first problem, no matter what type of facial dermatitis, should be clearly diagnosed, and then say how to treat. The most common types of facial dermatitis are: seborrheic dermatitis, cosmetic dermatitis, follicular worm dermatitis, facial sensitivity dermatitis, relapsing dermatitis, etc. Especially cosmetics and cosmetic lead to an increasing number of facial sensitivity dermatitis. No matter what kind of dermatitis, the clinical manifestations have their own characteristics. The most crucial thing is to first clarify the diagnosis, and then say how to treat it. The most common means of examination are trichophyton examination, patch test, especially the patch test is the most common means of examination for facial allergy, and it is also a more accurate means. The usual things to pay attention to are: try to observe whether there is any relationship between food and dermatitis, cosmetics and dermatitis and no relationship, whether it is aggravated after bathing, whether there is any relationship between perming and hair dyeing and dermatitis. Before treatment, there are many issues that need attention, the most critical is not to use cosmetics indiscriminately, do not use cosmetics that exfoliate the skin layer, do not often do beauty care to prevent the destruction of the skin layer, discoloration or pigmentation. It is the right choice to distinguish the diagnosis and then say treatment.