Construction assembly and method of drainage pipeline of washroom

The invention discloses a construction assembly and method of a drainage pipeline of a washroom, and relates to the technical field of house building. According to the construction assembly of the drainage pipeline of the washroom, a base plate is arranged on the bottom face of a pipeline assembling outer supporting frame, a locating template is arranged above the base plate, and multiple verticalsupports are arranged between the locating template and the base plate; the top of each support is in a u-shaped pipeline arc shape; and U-shaped holes are formed in the locating template, and matched clamps are arranged outside the U-shaped holes. By means of the construction assembly and method, by means of two sets of templates, primary structure hole performing and branch pipe set pipeline assembling in the washroom of a high-rise building are originally combined, advanced standard production and processing of drainage branch pipes of the washroom are achieved, and uniform integral mounting is achieved later; and