The first thing you can do to avoid swollen eyes caused by drinking water at night is to avoid this from happening again by not drinking too much water before going to bed at night. Secondly, you can take massage to accelerate the blood circulation of the eyes, so as to achieve the purpose of reducing swelling. Then the edema is more obvious can use some diuretic drugs, such as clinically used hydrochlorothiazide, furosemide and other drugs to achieve a diuretic purpose to reduce swelling. If the edema is not serious, you can use localized ways to reduce the edema, such as the paste of some potato chips, or hot towels to reduce the edema. Finally, you can also take some diuretic food, such as winter melon, barley, red beans and other such foods can be used.