The invention discloses an acetabulum posterior wall anatomical plate. The body of the acetabulum posterior wall anatomical plate is integrally formed, first transverse strip-shaped plate bodies are arranged at the two ends of the body, a second plate body and a third plate body which are transverse and are arranged in parallel are arranged in the middle of the body, a clearance area is arranged between the second plate body and the third plate body, and the width of the middle portion of the body is larger than that of the two ends of the body. Sliding holes are formed in the two first plate bodies respectively, and cortical bone screws used for fixing the body and pressurizing a fracture line are arranged on the sliding holes. Locking holes are formed in the second plate body and the third plate body respectively, and locking screws used for fixing smashed bone blocks and preventing the smashed bone blocks from shifting are arranged on the locking holes. The acetabulum posterior wall anatomical plate is easy to shape, high in fixing strength and good in stability.