There are four categories of drugs that can be taken orally after face allergy, as follows: the first category, antihistamines, such as cetirizine tablets, imipramine, etc., can largely reduce allergic reactions. The second category, light avoidance agents, such as hydroxychloroquine, carotenoids and so on. The face is very sensitive to ultraviolet radiation during allergy and light exposure should be minimized. For UV rays that cannot be avoided, the above mentioned drugs can reduce the damage of light. The third category, drugs that improve vascular permeability, such as vitamin C, vitamin E, etc. The fourth category, drugs with anti-inflammatory effect, such as compound glycyrrhizin tablets, extracted from licorice, has a powerful anti-inflammatory effect, if the effect is still not good, consider giving prednisone acetate tablets. In addition to oral medication, saline wet compresses should be applied after facial allergy.