The patient’s eyelids appear swollen, how to reduce the swelling need to find the cause, in order to better treatment. If one side of the eyelid is swollen, the most likely cause is inflammation, allergy, mosquito bites, or localized eye lesions, and only when the cause is found can the swelling be reduced in a better and faster way. In the case of bilateral eyelid swelling, the local cause is allergy, especially to certain cosmetics, pollen allergy, or bilateral eye problems, resulting in bilateral eyelid swelling. Finding the cause is the only way to treat it better and reduce the swelling more quickly. After considering localized lesions, bilateral eyelid swelling is caused by abnormalities in the whole body system, the most common of which are kidney disease and heart disease. In kidney disease, eyelid swelling is accompanied by bilateral edema of the ankles, and there may be an increase of foam in the urine, which does not disappear within a short time. If bilateral eyelid swelling is accompanied by cardiac abnormalities, such as arrhythmia or heart failure, this eyelid swelling is due to kidney disease or heart disease, and requires careful differential diagnosis and treatment in order to quickly reduce the swelling.