Abstract: Waveguide magic T has been widely used in microwave systems due to its low loss and high power capacity. However, its disadvantage is complex matching structure, high processing difficulty and poor consistency. A new waveguide magic T(compact Hplane waveguide magic T)structure is proposed in this paper. This magic T have compact structure, small size,light weight and very simple matching structure. From the result of simulation, this magic T has the advantages of wide bandwidth,low VSWR, high isolation, good amplitude and phase distribution characteristics and high power capacity. It can meet the need of high-precision, lowloss feed network.