Objective To monitor the changes of inflammatory parameters in sepsis patients ,especially the change of myeloper‐oxidase index (M PXI ) for differentiating the sepsis diagnosis and bacterial types .Methods One‐hundred and eighty‐three patients with bacterial infections were divided into the local infection group ,systemic inflammatory response syndrome (SIRS) group and sepsis group .Fifty‐four individuals undergoing healthy physical examination served as the control group .The inflammation situation at admission ,on 1 ,5 ,10 d after admiss...