Building connecting structural member

The utility model discloses a building type connecting structural member, which relates to the technical field of building outer walls, and comprises a wall body and mounting seats arranged on the wall body, the mounting seats are divided into an upper group and a lower group, and an outer hanging plate, a supporting device is arranged between the two groups of mounting seats, a limiting device is arranged on one side of the supporting device, and the limiting device is arranged on the other side of the supporting device. The limiting device is used for limiting movement of the outer hanging plate, the limiting device comprises an abutting plate movably clamped between the two sets of mounting bases, an inserting rod is movably inserted into the abutting plate, one end of the inserting rod is movably inserted into the outer hanging plate and used for limiting falling of the outer hanging plate, and a moving rod vertically penetrates through the outer hanging plate; the moving rod movably penetrates through th