Abstract:Dioryctria rubella Hampson is an important insect pest of the piney shoot, bud, cone and trunk. According to field observation and laboratory rearing, this insect has 2 to 3 generation a year in Zhejiang Province with early or middle and late instar larvae hibernating in bud, dead shoot or infested shoot. The adults of the overwintering, first and second generation occur from late April to late June, mid-September and late September to mid-October respectively. The larval boring habits in bud, shoot, cone and trunk and the relationship between the occurrence of the pest and the natural enemies of Macrocentrus sp. etc. were observed in the seed orchards of Pinus massoniana, P. elliottii and P. taeda.Experimental results showed that blacklight trap, spraying omethoate in early spring and punch-driping SN-851 were effective.