The utility model provides a sleeve pipe center positioner of system's pipeline, including screw rod and sleeve pipe, the cover pipe box is located the screw rod outward just the screw rod is located the sheathed tube central point put, screw rod and sleeve fixed with the template on the sheathed tube top is equipped with the lamina tecti to through the fastener can with the lamina tecti is fixed in the sheathed tube top. In having reached the work progress, the technological effect of upper sheathed tube center and lower floor's sheathed tube center alignment.