If it is caused by physiological factors that affect the aesthetics, you can cut double eyelids, if it is caused by pathological factors, it is not recommended to cut double eyelids. Swollen eyes may be caused by drinking a lot of water before going to bed, lack of sleep, etc., which can be relieved by themselves and generally do not need treatment, if it is caused by genetic factors and affects the aesthetics, it can be treated by double eyelid cutting in regular hospitals. Pathological factors caused by swollen eyes, such as conjunctivitis, keratitis and other eye diseases, nephritis, hyperthyroidism, allergies, etc., is not recommended to cut double eyelids. Also during pregnancy or menstruation girls are not recommended to cut double eyelids. Swollen eyes to cut double eyelids should be carried out in regular hospitals, preoperative assessment by a professional doctor. After the operation, pay attention to strengthen the eye muscles, keep the wound clean and prevent infection.