Renal edema usually occurs first in the eyelids and face. Nephrotic edema usually appears first in areas with loose tissues, such as eyelids, face, etc., and it is more obvious in the morning, and if the condition is not controlled, it may cause generalized edema, which is generally related to the decrease of glomerular filtration rate and the increase of tubular water and sodium reabsorption caused by water and sodium retention, resulting in excessive blood volume, and the large amount of proteinuria leading to low plasma protein, and so on. Renal edema is common in glomerulonephritis, secondary nephropathy, acute renal failure, chronic renal failure and nephrotic syndrome, etc. Diuretics can be applied to treat the symptoms, such as furosemide and torasemide. It is recommended that patients go to regular hospitals to receive timely examination, identify the causes, and actively treat the primary disease.