The causes of eyelid swelling are many and are not limited to diseases. They may be caused by elevated vascular permeability, decreased albumin in the blood, and may be related to allergic reactions, medications, and poor living and dietary habits. 1. Elevated vascular permeability: eye trauma, angioedema, and infectious diseases of the eyelids can cause increased vascular permeability, resulting in swelling of the eyelids, which may be accompanied by localized redness, swelling, heat and pain of the eyelids and other uncomfortable symptoms. 2. Reduced albumin in the blood: severe malnutrition, kidney disease and other diseases, such as glomerulonephritis, nephrotic syndrome, diabetic nephropathy, etc., can lead to eyelid edema, and often accompanied by other parts of the edema. 3. Others: In addition, allergic reactions, medications, poor living and dietary habits can also lead to eyelid edema. It is recommended that patients with persistent eyelid swelling consult a doctor to evaluate their condition and choose the appropriate treatment under the doctor’s guidance.