The utility model relates to a double -deck spiral heat preservation tuber pipe preparation bed -jig, including encorbelment arm, head tree, support frame, anchor board and column base bolt, the arm of encorbelmenting is fixed in the head tree top and extends to head tree the place ahead, and the support frame be the triangle -shaped truss structure, is fixed in head tree both sides and at the back, and the anchor board is fixed in bottom support frame and the head tree, division has the screw that is used for connecting anchor bolt on the anchor board. Wearing the cover with double -deck spiral heat preservation tuber pipe inlayer tuber pipe and on the arm is encorbelmented to the bed -jig, realizing that the tuber pipe is unsettled, each process atress of tuber pipe preparation can effectively be avoided in the unsettled operation of each subsequent handling, avoids the material to warp, break and harm, various materials such as protection heat preservation nail, heat preservation and aluminium foil glass fabric protective layer.