The invention discloses a lumped element power combining amplifier based on a medium integrated suspension line, wherein the power combining amplifier is an N-way power combining amplifier, each of the N-way power amplifiers is an M-level power amplifier, and the power distributor/combiner is an N-way power distributor/combiner; The input and output matching circuits of M-class power amplifiers adopt band-pass filter type matching network composed of several folded inductors and double-layer interdigital capacitors, which can reduce the circuit size and filter the signals, so that M-class power amplifiers have better gain flatness. The power divider/combiner adopts a low-pass filter-type matching circuit composed of several double-layer spiral inductors and double-layer interdigital capacitors, and adopts double-layer interconnected feeder. The use of double-layer spiral inductors and double-layer feeder reduces conductor losses. The lumped element power combining amplifier solves theproblems of large loss, large volume, bulk and additional metal shielding shell of the current power combining amplifier.