[Objectives]  Insect traps of different designs can sample some species more effectively than others. In order to estimate regional species richness more accurately, and detect a variety of species more efficiently, it’s important to determine the relative efficiency of different trap types. [Methods]  We compared the quantity and species diversity of longhorn beetles captured in funnel, intercept  and Malaise traps in Mongolian oak forest at Songhua Lake in Jilin Province. [Results]  The funnel trap captured a total of 189 longhorn beetles (4 subfamilies, 11 genera and 12 species), the intercept trap captured 134 specimens (5 subfamilies, 15 genera and 17 species), and the Malaise trap captured 99 specimens (4 subfamilies, 16 genera, 18 species). The relative ranking of the three trap types was, in terms of species richness, Malaise trap > intercept trap > funnel trap; in terms of absolute abundance, funnel trap > intercept trap > Malaise trap; and in terms of trapping dominant species, funnel trap > intercept trap > Malaise trap. [Conclusion]  A combination of intercept and funnel traps, supplemented with Malaise traps, should be the most efficient and economical method for trapping longhorn beetles.