Facial swelling can be seen clinically in kidney diseases, heart diseases, liver diseases and endocrine diseases. If it is caused by kidney disease, it can first manifest as eyelid puffiness, especially obvious in the morning, which can be reduced after activity, and can be accompanied by abnormal urinalysis, such as foamy urine and hematuria, most commonly in nephritis, nephrotic syndrome, etc. If it is caused by cardiac insufficiency, facial swelling usually appears after the swelling of both lower limbs after activity, and can be treated symptomatically by intermittent diuresis, such as oral furosemide, spironolactone, and other drugs. If it is caused by poor liver function, especially when albumin is low, it can be manifested as general edema, including facial edema, which requires active supplementation of albumin and symptomatic treatment. If it is caused by endocrine function, it can be seen in hyperthyroidism, hypothyroidism and mucinous edema, etc.