The symptoms of lower limb edema in a small number of nephritis patients can subside by themselves, but the probability of occurrence is low. The symptoms of lower limb edema in nephritis patients are mainly due to: i. A large amount of protein leakage in urine leads to hypoproteinemia, and water in blood vessels leaks out into the tissue interstitial space to form edema. Second, renal disease leads to a decrease in renal filtration rate, which causes a situation of water and sodium retention in the organism. Symptoms of lower limb edema in patients with nephritis need to be reduced symptomatically by diuretics and wait for the kidney disease to subside. For some patients, such as membranous nephropathy and microscopic lesion nephropathy, there is a possibility that the disease can be relieved on its own without medication, so the symptoms of lower limb edema can also subside on its own at this time.