The invention discloses a masonry filler wall reinforcement and plastering constructional column and a construction method thereof, and belongs to the field of buildings. According to the technical scheme, the masonry filler wall reinforcement and plastering constructional column comprises a masonry body, steel mesh pieces are arranged on the two sides of the masonry body, masonry embedded bars penetrating through the masonry body are connected between the steel mesh pieces, the upper ends and the lower ends of the steel mesh pieces are fixedly connected with upper flat steel and lower flat steel respectively, upper joint bars are fixedly connected with the upper flat steel, lower joint bars are fixedly connected with the lower flat steel, and the inner sides of the steel mesh pieces are smeared with mortar. The masonry filler wall reinforcement and plastering constructional column has the advantages that the steel bar manufacturing and binding link, the constructional column concrete link and the framework erecting and disassembling link for a traditional constructional column are omitted, materials are saved, and labor and time limit for a project are saved; the masonry filler wall reinforcement and plastering constructional column is connected with a structural frame system, and therefore a building stress system is more reasonable; the steel mesh pieces, the flat steel, masonry blocks, review fiber anti-crack mortar and the like are finished products, so that the quality is better guaranteed, and the working period is only 10% that of a traditional method; working procedures are simple, operation is easy and convenient, and universality is high.