The common causes of eyelid edema are physiologic and pathologic, pathologic such as ocular inflammation, allergy and organic diseases. 1. Physiological: Mostly seen in normal people, most people are caused by poor sleep or sleeping with a low pillow, which causes blood reflux obstruction, thus triggering eyelid edema. 2. Ocular inflammation: It is common for patients to suffer from keratitis, conjunctivitis, blepharitis or blepharitis, which will lead to localized swelling of the eyes and eyelid swelling, and will also be combined with localized redness, swelling, heat, pain, or photophobia and other symptoms. 3. Allergy: Eyelid edema is usually caused by external allergens or exposure to medications. 4. Organic diseases: if combined with heart disease, acute chronic nephritis, hyperthyroidism and other diseases, can also lead to eyelid edema. Eyelid edema has many causes, it is recommended to go to the hospital to receive the correct treatment.