The utility model discloses a straight screw sleeve connection mode rigidity is wall spare even, even wall spare steel pipe (1) attaches the wall end through the first reinforcing bar of steel sheet (2) connecting band silk (3), and pre -embedded sleeve (4) are fixed on template (9) of building subject structure (8) through bolt (6), and pre -embedded sleeve (4) are terminal for the enhancement anchor with for the end cap reinforcing bar (5), after be under construction major structure (8), demolish bolt (6), gasket (7), template (9) in proper order, will take silk first reinforcing bar (3) precession pre -embedded sleeve (4) to attach the wall and connect. Compared with the prior art, the utility model, when having guaranteed the reliability that even wall spare is connected, it is pre -buried, install, remove very simple and convenient, need not not cut off by the oxygen welding, except that pre -buried sleeve, all the other members all can have enough to meet the need used repeatedly, and reduce cost does not have the reservation entrance to a cave in addition, has avoided outer wall leakage hidden defect.