The invention discloses an anti-radiation composite wallboard for an electric power dispatching machine room. The anti-radiation composite wallboard comprises wallboard main bodies, a top board, a room body and a bottom board, the room body is mounted at the top end of the bottom board, the wallboard main bodies are evenly mounted at the two ends and on the two sides of the room body correspondingly, protrusions are arranged on one sides of the wallboard main bodies correspondingly, grooves are formed in the other sides of the wallboard main bodies correspondingly and connected with the protrusions on the adjacent wallboard main bodies, heat-preservation boards are mounted on one sides inside the wallboard main bodies correspondingly, and pieces of sound insulation cotton are mounted in the positions, on one sides of the heat-preservation boards, of the wallboard main bodies. By mounting solar cell panels, solar energy can be converted into available electric energy, and the electric energy is stored in a storage battery pack, so that energy consumption is greatly reduced, the wallboard is provided with the protrusions and the grooves, thus mounting and demounting are convenient, and the machine room is convenient to expand.