[Objectives]  Monochamus saltuarius Gebler, a vector of Bursaphelenchus xylophilus (Steiner & Buhrer) Nickle was discovered in Liaoning province, which indicates the fact that the security of pine forests in northern China is now under serious threat. Identification of species and individuals of cerambycid beetles in pine forests invaded by pine wood nematode can provide references for early monitoring for population dynamics of vector beetles and potential vector beetles and forecast of pine wilt disease’s occurrence. [Methods]  To identify the relative effectiveness of cerambycid multi-pheromone components, APF I attractant, F8 attractant and compounds lures, a trapping experiment for longhorn beetles was carried out from May to October in 2019 and 2020, in mature forests of Pinus tabulaeformis, Pinus koraiensis and Larix gmelinii var. principis-rupprechtii in Fushun city, Liaoning province. [Results]  Cerambycid multi-pheromone components and F8 attractant in the same trap among all these comparative groups achieved the best performance, due to the fact that each trap of this group captured the highest number of cerambycid beetle species (19 species; 18 species in P. tabulaeformis forest and 14 in P. koraiensis forest) and individuals ((18.31±8.86) ind./week in P. tabulaeformis forest and (23.44±10.92) ind./week in P. koraiensis forest).The cerambycid beetles trapped in three forests for a grand total include 34 species and 13 307 individuals. M. saltuarius accounts for 67% of the all species trapped, with the percentage of Arhopalus rusticus, Prionus insularis, Acanthocinus griseus and Rhagium japonicum being 13.2%, 6.6%, 4.1% and 2.7% respectively. [Conclusion]  Cerambycid multi-pheromone components and F8 attractant in the same trap captured the highest number of longhorn beetle species and individuals, therefore, this is an effective method for monitoring potential longhorn beetle vectors of pine wood nematode. 8 species of cerambycid beetles having already been proved to damage pines trees were captured, including M. saltuarius, A. griseus, Acanthocinus aedilis, A. rusticus, Asemum striatum and P. insularis. Based on their feeding and oviposition habits, what can be suspected is that pine wood nematode is more likely to be transmitted to healthy pine trees by A. griseus and A. aedilis rather than by A. rusticus, A. striatum and P. insularis, because the latter three species don’t need to supplement nutrition after eclosion and lay their eggs in bark gaps or in rotten wood, thereby reducing the possibility to spread pine wood nematode.