Eyelid swelling, also known as eyelid edema, can be caused by many reasons, including non-disease and disease factors, and may be related to nephritis, as well as other systemic diseases or ocular diseases. 1. Non-disease factors. Such as going to bed too late, drinking too much water before going to bed, eyelid skin laxity, mosquito bites, etc., may lead to the appearance of eyelid edema. 2. Disease factors (1) Systemic diseases. Including kidney diseases, such as glomerulonephritis, nephrotic syndrome, etc.; heart diseases, such as cardiac insufficiency, etc.; thyroid diseases, such as hypothyroidism; liver diseases, such as cirrhosis, etc.; thyroid diseases, such as hypothyroidism. (2) Eye diseases. Such as blepharitis, blepharocysts, conjunctivitis, orbital cellulitis, ocular contact dermatitis, dacryoadenitis, eyelid or lacrimal gland swelling. It is recommended that people with eyelid edema should consult a regular hospital in a timely manner and undergo relevant examinations to determine the cause of the disease.