Studying on relation between serum beta2-microglobulln conce.ntration and inflammatory state of 326 patients diagnosea as chronic renal failure treating with maintenaAce hemodialysis, the results show that the average beta2-microglobulln of patients who infected by S,C hepatitis virus was higher significantly than that of non-infected one (74.7 + or - :20.4 mg/l versus 57.2 + or - 18.5 mg/l, p0.001). Serum beta2-microglobulin relate close positively to serum CRP (r