Swollen lower eyelids may be caused by a variety of reasons, mainly including physiological and pathological causes. If it is just simple edema, not accompanied by painful itching or other discomfort, you should consider whether it is an under-eye bag. If it is determined to be under-eye bags, no special treatment is generally required, and if necessary, you can consider doing surgery to remove under-eye bags. A, physiological reasons 1, excessive use of eyes: staying up late, long time close look at electronic products such as cell phones and computers, will cause visual fatigue, capillary hypoxia, rupture, so that the eye congestion, eyelid swelling. It is recommended to use the eyes reasonably and healthily, generally use the eyes for about 30 minutes, should close the eyes to rest or look into the distance for 1 min. try to avoid staying up late and ensure sufficient sleep; 2, drinking too much water: such as drinking a lot of water the night before or eating a lot of watermelon, etc., may cause slow metabolism of water, retained in the body, resulting in lower eyelid edema. It is recommended to avoid drinking water within 2 hours before bedtime, or eating fruits containing a lot of water; 3, pillow too low: when sleeping without a pillow or pillow too low, it may affect the return flow of blood in the head and face, causing swelling of the lower eyelids. It is recommended to choose the right height pillow and develop a good sleep posture; 4, sub-healthy state: such as long-term fatigue, lack of nutrition, etc., will make the body in a state of low immunity, may also appear lower eyelid edema. It is recommended that the usual combination of work and rest, eat on time, eat more fresh vegetables and fruits. The actual fact is that you can find a lot of people who are not able to get a good deal on a lot of things. It is advisable to go to the hospital as soon as possible to clarify the cause and use anti-inflammatory and antibacterial drugs such as penicillin and erythromycin, antipyretic and analgesic drugs such as ibuprofen and aspirin, and anti-allergy drugs such as emmetine fumarate eye drops and oral benadryl for treatment under the guidance of the doctor. In the early stage, local hot compresses can be applied to help promote the dissipation of inflammation. Pay attention to a light diet and avoid eating spicy and irritating foods. Keep the eyes clean and hygienic, do not rub them with your hands; 2. Kidney disease: When the kidneys are incompetent, the kidneys’ ability to concentrate and filter urine decreases, which easily leads to water and sodium retention in the body and long-term edema in both eyes. It is recommended to go to the hospital in time for early diagnosis and treatment to avoid the continuous development and deterioration of the disease. Clinical treatment is usually targeted according to different causes, such as improving the primary cause of hypertension and anemia, maintaining electrolyte balance, and in severe cases, dialysis and kidney transplantation. In addition, patients with heart disease, hypothyroidism, and anemia may also develop eyelid edema. Since the conditions vary greatly, clinical treatment mostly needs to be combined with the patient’s specific situation, so it is impossible to make a generalization. If the lower eyelid is swollen for a long time or gradually worsens with or without other uncomfortable symptoms, it is mostly considered to be pathological, so you should promptly consult your doctor and actively cooperate with the treatment after identifying the cause.