The invention relates to a wall reinforcing bar embedded part and a construction method for installing a wall reinforcing bar by the embedded part. The embedded part is strip-shaped metal, and comprises an embedding end and an exposed end, wherein the cross section of the exposed end is greater than that of the embedded end; the exposed end is provided with an anchoring hole; before the concrete casting, a formwork is perforated according to requirements; before the initial setting of the concrete, the embedding end of the embedded part is inserted into the formed hole of the formwork; the anchoring hole of the embedded part remains in a formwork layer; concrete is cast; the formwork is dismounted; the anchoring hole of the embedded element is exposed; sundries in the anchoring hole are cleared; the wall reinforcing bar is inserted into the anchoring hole to be anchored; and the wall reinforcing bar is bent and folded. When the wall reinforcing bar is installed by the method, the operation is simple, convenient and fast; the cost is low; the positioning of the wall reinforcing bar is accurate; and the anchoring is firm and reliable.