The application discloses an optical fiber ceramic bare plug core grinding disc. The optical fiber ceramic bare plug core grinding disc comprises a grinding cover, a bottom seat, an elastic componentand a bare plug core protection sleeve support, wherein a plurality of placing holes used for placing optical fiber plug cores are formed in the bottom seat, grinding holes used for the optical fiberplug cores to pass are formed in the grinding cover, one end of the elastic component is connected with the bottoms of the placing holes, and the other end of the elastic component is connected with the bare plug core protection sleeve support. The plurality of the placing holes can be formed in the optical fiber ceramic bare plug core grinding disc according to the size of the optical fiber plugcores, and therefore a plurality of the optical plug cores can be ground once, and grinding efficiency is improved; and meanwhile due to the fact that the elastic component can independently press each optical fiber connector, production stability is effectively guaranteed, and rejection rate is reduced. Furthermore, due to the fact that no transfer step exists from the beginning of grinding to the finish of the grinding, the optical fiber ceramic bare plug core grinding disc solves the problems that optical fiber grinding rejection rate is high, and production efficiency is low in the prior art.