The invention provides a power divider, comprising: a plurality of transmission stages and a plurality of ground layers alternately arranged on respective ones of a plurality of dielectric layers, a first transmission stage being arranged on a first dielectric layer, and a last transmission stage being arranged below a last dielectric layer; wherein the plurality of transmission stages are arrayed vertically, each consisting of a loop formed by a transmission line; the first transmission stage has a first opening connected by a resistor, and each of the remaining transmission stages has the first opening connected by the resistor and a second opening without a resistor; two ends of the first opening of one of the adjacent transmission stages are connected to two ends of the second opening of the other one of the adjacent transmission stages by via transitions, in a top-to-bottom direction; and each ground layer has clearances through which the via transitions pass. The invention also provides a method of fabricating the power divider.