Taking the annual seismicity trend reports from 1992 to 2007 given by Second Monitoring and Application Center,CEA,as statistical sample,the seismic monitoring and annual earthquake prediction for northeast margin of Qinghai-Tibet block using crustal deformation data are tested.The capacity of earthquake prediction using crustal deformation anomalies is evaluated.The results show that there was no pretermission of prediction for moderate-strong earthquake in 16 years,4 events were predicted correctly and 19 times failed,the accuracy ratio of prediction is about 21%.It is indicated that crustal deformation monitoring has good predictive capacity to moderate-strong earthquake.But caused by the uncertainty of corresponding relationship between crustal deformation and earthquake event,the percentage of failure is much higher than one of accuracy.