Drinking water at night, especially after 10:00 p.m., the next day face edema, because drinking water at night will aggravate the burden on the kidneys, the kidneys reduce the amount of drainage, so there will be swelling of the face, which does not belong to the disease, belong to the physiological situation. So it is recommended to try to drink water before 9 pm. If the patient repeated facial edema, it is recommended to further investigate the blood routine, urine routine, liver function, ion, kidney function, thyroid function, urinary tract ultrasound, etc. If the disease is combined, it is recommended to actively treat the primary disease. Clinically, the longest cause of facial edema are kidney diseases, such as nephritis, nephrotic syndrome, renal insufficiency. Thyroid diseases, such as hyperthyroidism, hypothyroidism and so on. Some middle-aged and elderly people with menopausal syndrome can also have facial edema because of secretion dysfunction.