The utility model relates to an imitating trunk flexible mechanism, which is a connecting mechanism of a robot. The structure is formed by the series connection of a plurality of sections of parallel connecting mechanisms 1, 2 and 3, and each parallel connecting mechanism comprises three branch rods, an upper and a lower platforms connected with each other, and a hinge. A plurality of sections of the parallel connecting mechanisms are connected in series to form a super multivariant flexible arm mechanism. The utility model has the advantages of higher flexibility obstacle avoidance hole drilling ability for being capable of realizing the composite motion of rotating and moving, and high rigidity and accuracy.
