The utility model provides a nuclear power station stick accuse stick position system, each function cabinet including the electricity connection, the function cabinet includes: power cabinet, on -line monitoring cabinet, logical cabinet, measurement cabinet and processing cabinet, the electrical part of each function cabinet is installed in plug -in components, and plug -in components are installed in the cabinet body of each function cabinet through quick -witted case the not co -altitude of rack both sides board, the guide rail is installed to the organic case that sets up that is parallelto each other, the upper and lower panel of machine case is provided with the arch of the quick -witted incasement portion of orientation, adjacent two bellied intermediate positions formation spout,the upper and lower panel of plug -in components is provided with the metal slide of type shape, the card and in in the spout. This system has included function cabinet the most basic among the nuclear power station stick accuse stick position system. And to nuclear power station stick accuse stick position system's different electrical apparatus, equal accessible plug -in components, quick -witted case carry out the nimble assembly of detachable with the rack to satisfy nuclear power station stick accuse stick position system's different requirements.