Swollen eyes after sleeping can be considered as a result of physiological factors such as drinking too much water before going to bed, accidental touching during the night, allergies, and the presence of kidney disease, etc. Further examination is recommended. 1. If you drink too much water before going to bed, or sleep with a low pillow that affects the venous return of the face, it may lead to swelling of the eyes in the morning. 2. If you move around a lot during the night, you may be touched or hit by someone by mistake, or be allergic to the touch, resulting in edema of the eyes. 3. In addition, if both eyes have morning edema, we should also consider the existence of renal disease and other conditions, resulting in the emergence of nephrogenic edema. If your eyes are swollen after a nap and cannot be relieved by resting for a long time or if they are accompanied by other discomforts, it is recommended to go to the hospital for further examination to clarify the cause of the problem and deal with it in time.