The invention discloses a fault recording data fusion system based on multiple substations. The system comprises a hardware portion and a software portion. The hardware portion comprises an acquisition server, a recording file storage device, a data server, a master station database and a WEB publishing server. The software portion comprises a storage module and a data processing module. According to the fault recording data fusion system based on the multiple substations, through arrangement of the acquisition server, recorded fault information of each fault wave recording device can be collected effectively; through arrangement of the recording file storage device, an effect of temporary storage of the recorded fault information can be realized; through arrangement of the data server, the recorded fault information can be processed effectively to judge relevance between the recorded fault information, and finally, a failure analysis report can be obtained and stored in the master station database; and the information is issued to the WEB publishing server to inform work personnel of faults.