The invention relates to a digital substation message analyzer. The digital substation message analyzer mainly comprises an interface part, an acquisition control part and a display control part; the interface part comprises one path of USB (Universal Serial Bus) interface for carrying out file import, two paths of optical Ethernet interfaces for respectively receiving an IEC618509-2/1 sampling value and a GOOSE message, and two paths of ST interfaces for respectively receiving FT3 signals; the acquisition control part mainly comprises a singlechip CPU (Center Processor Unit) with a clock module and a storage, can implement and meet a certain accuracy requirement and has functions of acquiring, storing and analyzing an electric signal instantaneous value of a sampling rate; the display control part 3 mainly comprises a PC (Personal Computer) machine which has functions of carrying out information encoding, information block storage, information block identification and message information display and is provided with analysis software; and the display control part also comprises a corrugated display and a human-computer interface device which are connected with the PC machine. The digital substation message analyzer has the characteristics of reasonable structure composition, safety, convenience and reliability for use and the like.