Eyelid redness and swelling is usually caused by mosquito bites, atopic dermatitis, blepharitis, etc. It can be relieved by general treatment, medication and surgery. 1. Mosquito bites: When the eyelid area is bitten by mosquitoes, the eyelids may be red and itchy. Patients should avoid scratching the eyelid area after being bitten, and can use saline and boric acid solution to promote swelling under the guidance of the doctor, and if necessary, with glycerite lotion to relieve itching. 2. Allergic dermatitis: If the skin of the eye comes into contact with pollen, dander and other allergic substances, resulting in an allergic reaction, it will be manifested as redness and swelling of the eyelids. It can be relieved by topical use of drugs such as compound dexamethasone cream under doctor’s guidance. 3. Blepharitis: usually mainly caused by staphylococcal infection, it shows symptoms such as redness and swelling of the affected area, elevated skin temperature, pain, etc., which may appear as redness and swelling of the eyelids. Treatment can control the inflammatory reaction through the use of levofloxacin eye drops, erythromycin ophthalmic ointment and other medications under the guidance of a doctor. If an abscess has formed, it needs to be surgically incised and drained. When the symptoms of redness and swelling of the eyelids, it is recommended to consult a doctor in time, under the guidance of the doctor for appropriate treatment. The medication should be used in accordance with the doctor’s instructions, do not blindly use your own medication.