OBJECTIVE To investigate and control the risk factors about nosocomial infection in cerebral hemorrhage patients.METHODS Totally 986 hospitalized patients with cerebral hemorrhage in our hospital from Jan 2002 to Dec 2005 were studied retrospectively.RESULTS It showed that the incidence of nosocomial infection rate was 32.05%,case infection rate was 44.62%.The nosocomial respiratory tract infection was the highest(66.36%),the second one was the urinary tract(20.68%).We also found that the risk factors prone to nosocomial infection were aging,long hospitalization,respiratory machine application,respiratory tract inicison,indwelling catheter and coma.CONCLUSIONS Nosocomial infection is still a high frequent complication in cerebral hemorrhage.It is suggested that there be urgent need for treating the underlying disease and reducing the risk factors,then can reduce the development of infection in patients with cerebral hemorrhage.