The utility model relates to the intelligent transformer station technical field and discloses a fiber information digital signal analyzer. The fiber information digital signal analyzer comprises a card reader, a processor and a display. The card reader, the processor and the display are sequentially connected. The card reader is used for acquiring signals of an electronic identification card on a fiber body and sending the signals to the processor. The display screen is used for displaying the signals of the processor. The fiber information digital signal analyzer provided by the utility model solves the technical problem that message information of a running fiber in a conventional intelligent transformer station cannot be acquired. The fiber information digital signal analyzer makes it convenient for an operator to check fiber transmission information messages and rapidly accurately identify the fiber functions when equipment is put into operation. The fiber information digital signal analyzer which does not affect the intelligent adjustment of an intelligent transformer station has the advantages of simple structure, convenient operation and time saving. The fiber information digital signal analyzer is suitably used in most occasions.