The present invention discloses a digitlization transformer station secondary device monitoring and analysis system. The system comprises a plurality of digitlization transformer station secondary devices, a station control layer device, a total monitoring unit module and an analysis alarm module. Each secondary device comprises one intelligent operation box, one merging unit, one protection and automatic device and one communication device. The total monitoring unit module comprises intelligent operation box monitoring modules arranged in the operation boxes, merging unit monitoring modules arranged in the merging units, protection and automatic device monitoring modules arranged in the protection and automatic devices and communication device monitoring modules arranged in the communication modules. The secondary devices are connected with the station control layer device through a network message record connection device, and the analysis alarm module is connected with the network message record connection device, the total monitoring unit module and the station control layer device. The digitlization transformer station secondary device monitoring and analysis system can perform large-range monitoring and is high in monitoring accuracy; and moreover, the digitlization transformer station secondary device monitoring and analysis system is provided with a fault analysis system to greatly reduce the burden of manual fault analysis.