Basement exterior wall post-cast strip construction structure

The utility model discloses a basement exterior wall post-cast strip construction structure. A steel plate water-stopping belt is arranged on a basement exterior wall and close to a post-cast strip, and a concrete precast block wall body is built on the outer side, corresponding to the post-cast strip, of the basement exterior wall. A concave corner and a convex corner of the joints of the left side and the right side of the concrete precast block wall body and the basement exterior wall are painted to be in an arc shape through mortar. According to the basement exterior wall post-cast strip construction structure, the concrete precast block wall body is used, the technology is convenient, and construction quality is guaranteed.