Wall body of mortar building retaining wall

A mortar building retaining wall body comprises a retaining wall foundation and a retaining wall body arranged on the retaining wall foundation, and the retaining wall foundation is filled with a wall corner ground line covering the retaining wall foundation. A soil retaining layer abutting against a soil body is formed on the back of the retaining wall body, and an exposed layer abutting against a wall corner ground line is formed on the surface of the retaining wall body. The retaining wall foundation comprises a retaining wall body and retaining wall sections arranged on the retaining wall body. The soil retaining layer comprises a main body soil retaining surface corresponding to the retaining wall main body and a top soil retaining surface corresponding to the retaining wall section; compared with the prior art, under the action of the main body soil retaining surface which is obliquely arranged, the size of the retaining wall main body is gradually increased from bottom to top, and on the premise that t