Swelling of the upper eyelid may be caused by excessive crying, lack of sleep, excessive water intake, eye diseases, systemic diseases and other factors. As there are many causes of eyelid swelling, treatment should be based on the cause of the problem, and there is no generalized fastest way to reduce swelling. Common ways to reduce swelling include applying cold compresses, applying hot compresses, regulating work and rest, regulating water intake, and treating the primary disease. If the upper eyelids are swollen due to prolonged crying, you can use cold towels and hot towels alternately on the eyelids to eliminate eyelid swelling; if the eyelids are swollen due to prolonged sleep deprivation, you can regulate work and rest to avoid staying up too late, and ensure that you have a good night’s sleep to improve the eyelid swelling. If the eyelids are swollen due to excessive water intake, you can regulate the amount of water you drink to improve the situation. If the swelling of the upper eyelid is caused by eye diseases or systemic diseases, such as kidney disease, heart disease, etc., you should go to the hospital for a detailed examination to clarify the specific causes of the disease, and under the guidance of the physician, according to the type of disease, improve the eyelid swelling by treating the primary disease. If there is swelling of the upper eyelid of the eye, you can go to the hospital for examination and clear diagnosis, so as to carry out targeted treatment, avoid delaying the condition, in order to prevent the aggravation of the disease and cause other problems.