When the upper eyelid appears red, swollen and painful, you need to go to the ophthalmology clinic to find out the cause of the disease, according to the cause of the targeted treatment, the common causes of granuloma, cosmetic allergies, mosquito bites and so on. 1. Wheat swelling: mostly acute purulent lesions caused by Staphylococcus aureus infection of the eyelid glands, which can cause eyelid redness, swelling, heat and pain, early through hot compresses with local antibiotic treatment to promote the recession, such as the application of levofloxacin ophthalmic ointment, etc., and when abscesses form, they need to be incised and drained. 2. Cosmetic allergy: eye use of unqualified or unsuitable cosmetics, resulting in an allergic reaction, there can be upper eyelid redness, swelling and pain, the need to immediately stop using allergenic cosmetics, if necessary, can be taken orally loratadine and other anti-allergy drugs for treatment. 3. mosquito bites: mosquito bites eyelids, the release of toxins in the local skin, can lead to redness, itching, pain and other manifestations, you can local cold compresses with the application of tobramycin dexamethasone eye ointment to improve the relief of symptoms. The redness, swelling and pain of the upper eyelid after a short period of observation, if it never subsides or further aggravation, it is recommended to consult a doctor as soon as possible, as soon as possible to be the cause of the symptomatic treatment. Medications should be used under medical supervision, not self-medication.