The invention provides a substation network data acquisition and management method and device. The acquisition device comprises an acquisition unit which comprises a message data collecting module, adata analyzing module, a data storing module and a data forwarding module. The message data collecting module is used for collecting message data of monitored devices in a substation in real time after being triggered, the data storing module comprises at least two storage areas with storage one area for storing SV message, the data analyzing module is used for analyzing the stored message data, and the data forwarding module is used for sending an analysis result to a management unit. According to the method and the device, the acquisition unit collects the data when the acquisition unit is triggered, large resource occupation is avoided, the performance of a CPU is ensured, the monitored devices in the substation can be effectively organized and distributed, the high-speed and stable transmission of the data is realized, and the transmission rate is high. According to the method and the device, multiple resolution protocols are supported, and the types of analyzed message informationare numerous.