The utility model provides a circular frame post tower crane attachment thick pillar component, it includes adjustable square column thick pillar hoop and cylinder thick pillar frame, the middle partof adjustable square column thick pillar hoop has an adjustable square hole, the frame body of cylinder thick pillar frame externally is squarely, and the circular pore of inside for supplying the circular frame post to pass of frame body is equipped with the linking steel sheet all around in the outside of frame body, and cylinder thick pillar frame is through linking up the steel sheet fasteningconnection in the adjustable square hole of adjustable square column thick pillar hoop. The utility model discloses can effectively solve the tower crane structural anchored of circular frame post construction difficult point in high -rise building, can have enough to meet the need the use many times, the practical function is good.