The determination of whether chronic renal failure is infectious is as follows: 1. Non-infectious etiology: chronic renal failure caused by primary or secondary glomerulonephritis, diabetic nephropathy, hypertension, kidney injury, etc. is generally not infectious because the original disease is not infectious and the nature of the disease has not changed. 2. Infectious etiology: if the cause of the disease is renal impairment caused by infectious diseases such as hepatitis B-related nephritis or AIDS, it is necessary to Assessment of the relevant original disease is conducted to determine whether it is infectious.