Analyses on the Monitoring Capability of Guizhou Digital Seismological Information Network

14 digital seismological information networks has been built and run in Guizhou province.According to the instrument capability,it used earthquake magnitude ranking method to do the theoretical calculation to the monitoring capability of Guizhou digital seismological information network,and testedit by use the observed earthquake information in 2008 and first half year of 2009.The conclusion is most area can monitor earthquake ≥ML 2.1,central and part of eastern area ≥ML 1.9,western area ≥ML 2.3,the monitoring capability in north area is weaker.