The utility model relates to the field of building construction, in particular to an acoustic board spraying system. The device comprises a storage mold frame and a spraying module, the storage mold frames are fixed to the storage field at intervals in columns, the storage mold frames are divided into a plurality of storage areas through division bars to be used for storing the acoustic panels, and a spraying module is installed between every two adjacent storage mold frames. The spraying module comprises a main pressure water supply pipeline and branch pipelines arranged on the main pressurewater supply pipeline at intervals in a communicating mode, and spray heads are arranged at outlets of the branch pipelines. The partition strips and the supporting parts on the partition strips are arranged, the sound absorption plates are placed in a separated mode, and the maintenance effect is not affected between the adjacent sound absorption plates; the shape of the supporting part is optimized to be a gasket, small holes are formed in the gasket, the maintenance effect is further optimized, and a blind area is prevented; the interval timer is arranged on the spraying device, the liftingfunction of the branch pipeline is added, the spray head is optimized to be a rotary spray head, and the spraying efficiency is improved.