Provided is a microwave power combiner. A 2-way microwave power combiner includes a first input stage and a second input stage each through which a microwave signal is input; a first output stage through which a sum signal between the microwave signals is output, in response to the microwave signals input through the first input stage and the second input stage having the same phase; and a second output stage through which a difference signal between the microwave signals is output, in response to the microwave signals input through the first input stage and the second input stage having different phases. The first input stage, the second input stage, the first output stage, and the second output stage are connected using a suspended line that includes a conductive line positioned on a dielectric layer provided between air layers.