The face is allergic to many small particles, usually considered to be caused by allergic dermatitis, scratching should be strictly prohibited, immediately wash the face gently with warm cool water or light salt water to remove the substances that cause facial allergies, and then use a towel soaked in cold water on the discomfort parts of the face to relieve the allergy symptoms by continuous cooling. After cleaning, you should seek medical attention and follow the doctor’s instructions to use medication, internal and external treatment with obvious results. Topical medications include zinc oxide cream, calcium phosphatase inhibitors such as tacrolimus ointment, etc. Oral medications include anti-allergy drugs such as paracetamol, cetirizine, loratadine, etc. If the allergy is severe, anti-inflammatory drugs such as compound glycopyrrolate tablets can be combined. If the inflammatory reaction is not very serious, care should be taken to avoid hormonal creams, such as hydrocortisone butyrate cream and Denide cream, which can cause adverse reactions such as dilation of facial capillaries and hyperpigmentation with long-term use. During the treatment, attention should be paid to stay away from allergens to prevent aggravation or recurrence of allergy. During the treatment of allergies, attention should also be paid to avoiding spicy and irritating foods, reducing skin care steps, disabling cosmetics, and keeping facial skin clean and dry.