Abstract:ObjectiveTo investigate the clinical characteristics of surgical site infection(SSI) in a hospital ,so as to reduce infection rate by making appropriate prevention and control measures .MethodsSurveillance information of SSI in patients from January 2006 to December 2009 was analysed prospectively.ResultsA total of 22 237 patients with surgical operations were monitored , 325(1.46%) of whom developed SSI； The top three departments with infection rates were urologic department(2.69%), orthopedics department(2.20%), and thoracic department(1.97%); The main isolated bacteria were Klebsiella pneumoniae(19.29%), Escherichia coli(17.26%) and Staphylococcus aureus(10.66%). ConclusionMonitoring on departments with high risk factors and main pathogens of SSI should be intensified , intervention measures for SSI should be adopted , and the incidence of SSI can be reduced effectively.