Abstract: Influenza activity occurred throughout Guangdong Province from February to July in 1996,which was mostly concentrated with domination of H3N2 strain at the middle and primary schools and kindergardens.The characterastics of outbreaks were included in:(1)the prevalent H3N2 strain was with "0" phase biological features;(2)the epidemic peak outbreaks was from April to May and no summer peak ;(3)the outbreak covered widly especially concentrated in metropolitan areas and middle-class cities;(4)most outbreaks occurred in school,and patients were concentrated in teenagers and pre - schol children. It was proposed that influenza surveillance should be strengthened,especially in influenza seasons;besides,the susceptible persons such as children and the aged sshould be inoculated with influenza vaccine.