The invention discloses a combined plate for absorbing nuclear power neutrons. The combined plate comprises a No. 1 neutron absorption plate, wherein a No. 1 fixed concave block is fixedly connected with the outer surface of the upper end of the No. 1 neutron absorption plate; a clamping shaft is fixedly mounted in the No. 1 fixed concave block; a left connecting rod is arranged above the clampingshaft; a clamping groove is formed in the outer surface of the middle of the lower end of the left connecting rod; the inner surface of the clamping groove is movably connected with the outer surfaceof the clamping shaft; the outer surface of one side of the left connecting rod is fixedly connected with a double-layered connecting sheet; a connecting hole is formed in the outer surface of the middle of the double-layered connecting sheet. According to the combined plate for absorbing the nuclear power neutrons, disclosed by the invention, the nuclear power neutron absorption plates can be movably connected together, and the quantity of the nuclear power neutron absorption plates can be conveniently increased and decreased; the nuclear power neutron absorption plates do not need to be fixedly mounted any more and overhauling and repairing are convenient to carry out at a fixed period; the effect of fixing the absorption plates is realized while the area of the absorption plates is enlarged.