Renal infarction, also known as renal artery embolism, is a common disease in nephrology, most commonly seen in nephrotic syndrome with hypoalbuminemia, decreased plasma colloid osmotic pressure and increased plasma viscosity, which can present an increased risk of embolism, of which renal artery embolism is the most common, and once it occurs, it requires active anticoagulation therapy, clinically, such as the application of aspirin, warfarin, low molecular heparin, rivaroxaban, and other treatments. At the same time, the coagulation system should be closely monitored, and if there is bleeding from the gums and mouth, or black stool, the anticoagulant drug should be reduced, and the primary disease should be actively treated, and immunosuppressive drugs such as hormone, cyclophosphamide, tacrolimus, cyclosporine should be applied, and when the primary disease is treated, the renal infarction can also be significantly improved.