The invention is suitable for the technical field of radio frequency microwave assemblies, and provides a tile type T/R assembly and a design method thereof, the tile type T/R assembly comprises a metal box body, the upper side surface of the metal box body is provided with a first groove, and N * N channels used for placing radio frequency plug connectors are distributed around the first groove,wherein the N * N channels form M areas which are symmetrically distributed, the distance between any one area and two adjacent areas in different directions is different, the channel layout in each area is the same, and the distance between the transverse channels is different from the distance between the longitudinal channels; the upper cover plate is consistent with the first groove in shape and is used for covering the first groove; a plurality of second grooves corresponding to the N * N channels in position are formed in the lower side surface of the metal box body; and the plurality oflower cover plates are consistent with the second grooves in shape and are used for covering the second grooves. According to the tile type T/R assembly, the space utilization efficiency of the tiletype T/R assembly can be improved, and the thickness of the tile type T/R assembly is equal to that of a metal box body.