Patients who drink a lot of water and have swollen eyes may be normal, and may also be caused by kidney disease and so on. 1. Physiological factors: If patients drink a lot of water before going to bed, the performance of puffy eyelids can appear after waking up in the morning, but generally the eyelid swelling is not obvious and there are no obvious symptoms, no special treatment is needed. 2. Kidney disease: chronic nephritis, nephrotic syndrome and other kidney disease patients drink too much water, because of kidney tissue damage, can not discharge liquid in time, resulting in water in the body to gather, so that the flaccid parts of the edema, and therefore can appear eyelid swelling performance. It is recommended that patients who have obvious eye swelling after drinking too much water should consult a doctor in time to assess their condition and follow the doctor’s instructions for treatment.