Combined cylindrical under-forest ground beetle trap

The utility model discloses a combined cylindrical under-forest ground beetle trapper, and relates to the field of insect trapping. The combined cylindrical under-forest ground surface beetle trap comprises a fixing plate, a round hole is formed in the top of the fixing plate, and a fixing column is movably inserted into the inner wall of the round hole formed in the top of the fixing plate. According to the combined cylindrical under-forest ground surface beetle trapper, by setting the position relation of a containing box, a rotating gear, a transmission gear, a connecting block, a clamping plate, a limiting groove and a limiting column, a trapper body is clamped in the clamping plate, then the position of the clamping plate is limited through the limiting column, and the position of the trapper body is fixed; the trapper body is prevented from being collided and falling down, the phenomenon that beetles escape is avoided, the position of a clamping plate can be moved by moving the position of a limiting co