The ecological trap of bamboo pests was the difficulty of current study. In the study, a new type of cylindrical insect traps was produced with long-shaped bamboo and smooth and thin polyethylene, and its trapping effect on different size C. buqueti was carried out with bamboo shoot taken as attractant. On the basic of analyzing trapped parts on imago and its ultrastructure, the force characteristics of imago foots and the force mechanisms between the imago foots and insect net were analyzed. The results suggested that: (1) to some extent, trapping rate(Y) on C. buqueti was significantly related to mesh side length(X₁), and impacted by midleg length(X₂), and followed the equation of Y=-30.551+13.945X₁+7.825X₂(X₁∈ , X₂∈ ). (2) The trapped main parts of imago by insect traps were tro-chanter and femur of foreleg and midleg and hindleg. (3) The interaction between imago foots and insect net was mainly mechanical force, and the capture of insect trap on C. buqueti resulted from the mechanical force. The insect net trap with the traits of easy production and low cost and harmless was an effective capture tool to C. buqueti. As a result, this result provided an important theory basis for ecological control of bamboo pest.