Eyelid swelling of nephritis may subside within 1~2 hours, or it may subside after 1 month or even longer time to subside. Different time needs to be analyzed according to the severity of nephritis and whether taking medication. 1.1~2 hours: in nephritis, due to the decrease of renal filtration rate, water accumulation in the body, excess water is easy to gather in the loose tissues, such as eyelids, when nephritis is mild and can be cured by itself, the mild eyelid edema will return to the torso with the effect of gravity after the human body activities, and it can subside in 1~2 hours. 2.1 months: patients with severe nephritis, resulting in a large number of sodium retention, eyelids and lower limbs with depressed edema, need to take diuretics (furosemide, etc.) dehydration treatment, such as hypertension, but also need to take antihypertensive drugs (such as valacyclovir) symptomatic treatment, and even need to be taken orally for treatment of hormones (prednisone acetate, etc.), the drug took effect, the eyelid edema may be 1 month to subside. 3. Longer time: some pathological types of nephritis, such as membranous proliferative nephropathy, focal segmental glomerulosclerosis, etc., the condition is more serious, the effect of drug treatment is poor, the disease may not be relieved for 3 months, then the eyelid swelling may take a longer period of time to subside. Eyelid edema in nephritis also need to pay attention to diet, limit salt intake, limit high protein diet. It is recommended that patients with nephritis go to regular hospitals for systematic examination and treatment of the primary disease in a timely manner, so as not to be negligent and delay the condition.