What to do after kidney necrosis depends on the situation of kidney necrosis, clinically the most likely causes of kidney necrosis are kidney stones, ureteral stenosis, kidney tumors, uremia, early can cause kidney damage, such as further deterioration of the disease can appear kidney necrosis. If the kidney necrosis is caused by stones or ureteral stenosis, chronic renal failure, it is recommended to actively treat the kidney conservatively, through oral medications, such as medicinal charcoal, Bering capsule, renal rejuvenation, sodium bicarbonate, erythropoietin and other drugs, and if necessary, active renal replacement therapy. In case of renal necrosis caused by renal tumor, because renal tumor can spread to the other side of the kidney, it is recommended to actively remove the necrotic kidney tissue and remove the kidney through surgery, such as renal necrosis caused by kidney transplantation, it is recommended to actively remove the kidney through surgery.