The invention belongs to the bridge engineering technical field, in particular to a combined beam of a fiber reinforcement composite material and concrete. The combined beam consists of an FRP profile, an upper layer of a longitudinal FRP rib, an upper layer of a horizontal FRP rib, a lower layer of the longitudinal FRP rib, a through FRP rib and a concrete plate. The FRP profile consists of fourparts of a perforated plate, an upper flange, a lower flange and a web plate. A template is paved at the position of the upper flange along the FRP profile; the FRP through rib is passed inside a hole of the perforated plate; the lower layer of the longitudinal FRP rib is lashed, the upper layer of the longitudinal FRP rib and the upper layer of the horizontal FRP rib are lashed on the perforatedplate, and finally the concrete is poured to combine into a whole. The invention develops sufficiently compression resistance property of the concrete and tensile property of the FRP profile, and theperforated plate has a function of transmitting a shearing force between the FRP profile and the concrete and preventing the FRP profile and the concrete from separating vertically. The combined beamrealizes a system of a non-steel combined beam and has the advantages of good corrosion resistance, good ductility and convenient construction, and has a wider application prospect in the bridge engineering field.