Puffy eyes in the morning may be related to physiological reasons, eye diseases, systemic diseases and other factors, and the specific situation varies from person to person. Drinking too much water before going to bed, not getting enough sleep, and staying up too late can all cause swollen eyes when you wake up the next morning, which is a physiological cause of morning eye swelling. Eye diseases such as blepharitis can also lead to swelling after waking up, mostly caused by bacterial infections, and can be accompanied by other discomforts such as eye pain. Systemic diseases such as heart and kidney diseases, which cause blood circulation disorders, can also lead to swollen eyes after waking up. If the symptoms of eye swelling continue to worsen in the morning, you should seek medical treatment in a timely manner, and should not take any action without authorization, so as not to delay the condition. It is recommended to maintain a regular routine and eat a reasonable diet.