Swelling of patient’s eyelids may be caused by eye allergy, eye infection, eye trauma and visual fatigue. 1. Eye allergy: If allergic patients are exposed to allergic substances, such as dust, hair, etc., it is easy to cause patients’ eyelid swelling, itching and other discomforts. Patients can follow the doctor’s instructions to take oral anti-allergy drugs, such as loratadine tablets, chlorpheniramine maleate, etc., to promote recovery. 2. Eye infections: eye infections caused by bacteria, chlamydia, viruses, fungi and other germs, such as conjunctivitis, keratitis, iritis, etc., eye inflammation can lead to eyelid swelling. 3. Eye trauma: the eyes can be traumatized by external impact, and the patient may experience eyelid swelling, as well as subcutaneous bruising, eye pain and other uncomfortable symptoms. 4. Visual fatigue: If patients stay up late or look at electronic products for a long time, it can cause visual fatigue, and patients may have sore and dry eyes, as well as swollen eyelids. It is recommended that patients with obvious swelling of the eyelids consult a doctor in time to assess their condition and follow the doctor’s instructions for treatment.