This application provides a beamforming network architecture of an N-drive-M network, and relates to the field of communication antenna technologies. The architecture includes: A first circuit includes at least one bridge, where input ends of the at least one bridge are coupled to digital channels in N analog networks, to perform digital weighting and analog on a received electrical signal; a second circuit includes at least one bridge, where output ends of the at least one bridge are coupled to M antennas, to perform digital weighting and analog on a received electrical signal; and a connection circuit includes at least one power splitter, where an input end of the at least one power splitter is coupled to an output end of the at least one bridge in the first circuit, and an output end of the at least one power splitter is coupled to an input end of the at least one bridge in the second circuit, to divide a quantity of electrical signals from N to M through power splitting. The beamforming network architecture designed in this application can implement a plurality of wide beams or a plurality of narrow beams by connecting a plurality of levels of components. In addition, a plurality of wide beam ports are highly isolated. Narrow beam sweeping in a coverage area can also be implemented through the network.