The invention relates to an E-T connector-based small sized waveguide power synthesis network, and is mainly applied to a W-waveband transceiving assembly and other fields needing small-sized power synthesis; the network input end is a standard 50- microstrip line, adopts a quartz (SiO<2>) material and a thin film processing process; the output end is a standard WR10 interface; the waveguideport dimension is 1.27*2.54mm; the whole synthesis network adopts a back-to-back waveguide structure; a ''wedge-shaped'' cut is introduced to the waveguide synthesis symmetrical place of a combiner, so that standing wave is improved and waveguide impedance is more matched; by virtue of the power synthesis network, the synthesis power reaches 93.6%; and the power synthesis structure is well appliedto projects and engineering verification is passed, so that high reliability and consistency are shown.