Abstract:Utilize type of A-3 and M--99 longhorn beetle attractant to trap Monochamus tesserula. The result indicates occurance period of Monochamus tesserula is between late May and early September in Pinus massoniana Lamb. forest region of Enshi Autonomous in Hubei Province, the occurance mostly is between 10 June -31 July. at the same time, this method also can kill large number of Monochamus tesserula.