Itching and redness of the face in spring may be due to allergies caused by pollen, willow floss and other substances, and it is recommended to wear a mask and other measures, and if combined with a severe redness and swelling of the skin rash, medication can be used. Spring is a time when allergens such as pollen and willow flakes are produced in large quantities, and itching, redness, swelling, and rashes after going out in this period may be due to an allergic reaction. Mild allergic reactions can be intervened by wearing a mask, paying attention to daily skin cleaning, and eating a light diet. If the above general measures are not effective in controlling the symptoms, or if manifestations such as breathing difficulties occur, medication is required. Commonly used anti-allergy drugs include cetirizine and loratadine. However, the specific choice of drugs, clinicians need to comprehensive judgment, and do not unauthorized use of drugs. When allergies such as skin redness, swelling and rashes occur, it is recommended to go to the hospital in a timely manner.