Abstract: Newsoftware successfully developed has solved a problem of that noreal timemen-toring the digital seismic wave in the NCESN station. It is helpful to keep abreast of working situation of digital seismometer and flowing of seismic event data. Using suitable filter can greatly raise Big Earthquake Fast Report working efficiency. The other feature is when thesoftware is running the operator can modify any parameters directly with out interrupting the program; the modified results can come into viewat once. The operation is very simple.

Key words: Real time monitoring, Seismic data, Filter, Thread program