The causes of puffy eyes can usually be attributed to diseases of the eyes themselves or systemic diseases. Diseases of the eye itself include: contact dermatitis of the eyelid due to allergies, with high edema, redness and itching of the eyelid skin; swelling of the eyelid skin when there is exophthalmos, endophthalmos, lid cysts or localized masses on the eyelid; inflammation of the conjunctiva, especially viruses, kataric conjunctivitis, hemorrhagic conjunctivitis, keratitis, glaucoma with high intraocular pressure, corneal edema, eye inflammation and irritation symptoms worsen when the eyelid is edematous; the eyelid skin can swell due to impaired blood circulation in the eye when the eyelid eye is traumatized, impacted, or accompanied by subcutaneous hemorrhage. Systemic factors of eyelid swelling include excessive eye use, staying up late, drinking too much water before bedtime, hypoproteinemia due to primary or secondary liver disease or kidney dysfunction, a high-salt diet, sodium and water retention due to hormones or electrolyte-regulating medications taken for other diseases, impaired or poor circulation, sedentary lifestyle, hypothyroidism, hormonal changes during pregnancy or The hormonal changes during pregnancy or the rise in venous pressure during the later stages of pregnancy may cause sodium retention, and the hormonal secretion level of women during their menstrual period. In summary, the specific causes of eyelid puffiness should be analyzed from both a local and a generalized view of the eye.