The redness of the brow can often be caused by external stimuli, which is normal; in addition, allergies and inflammation can also cause redness of the brow skin, which needs to be treated according to the specific causes. 1, external stimuli: such as high temperature, friction and other factors caused by local skin temperature, capillary expansion, manifested as local reddening, usually without treatment can be self-recovery; 2, allergies: patients contact with allergenic substances, such as seafood, beef and mutton, mangoes, irritating cosmetics, etc., caused by allergies, will appear redness, itching, rash and other symptoms. 2, allergy: patients exposed to allergenic substances, such as seafood, beef and mutton, mangoes, irritating cosmetics, etc., causing allergy, will appear skin redness, itching, rash and other symptoms. Patients can take anti-allergy drugs such as oral loratadine tablets and cetirizine hydrochloride tablets under the guidance of a doctor, or apply topical drugs such as pimecrolimus cream and glyburide lotion locally to improve the symptoms; 3. Inflammation: redness of the skin on the brow with obvious pain is considered to be a bacterial infection formed by folliculitis, which will appear as a red rash, and the pain is more intense after pressure, and can be treated with local application of mupirocin cream. If the redness of the eyebrow is like scraping, it is considered seborrheic dermatitis and can be relieved by topical application of tacrolimus ointment and pimecrolimus cream. The redness of the eyebrows is attributed to excessive heart fire in Chinese medicine, that is, the patient has recently been under too much stress and poor qi and blood, so attention should be paid to combining work and rest and relaxing the body and mind. Specific medication should be based on professional medical guidance, patients should not self-medicate, if the skin symptoms do not improve or worsen, should promptly seek medical advice and adjust the treatment plan.