The time sequence corresponding between seismic precursor information and strong earthquakes activity or symmetry and stuffing phenomenon of field and sourse associating for earthquake frequency in world from Jan.2001 to Aug.2007 were disscussed by the view eyeshot.The result shows,the expectant aim can't be come true using preterit methods.The reason may be category of preterit whole view is smaller than world,it belong to territorial concept.

According to observation,there was some spatial and temporal precursory information in the seismic activity of M≥6.0 earthquakes at the both sides of the same latitude segment before Indonesia M8.9 earthquake,which occurred in Sumatra offing on Dec.26,2004,and the information can be tested through retrospection.Nevertheless,according to the records that recorded by Hongshan Seismostation,we can also get the prediction result of "active time interval".It is concluded that the seismic activity before strong earthquake,which is a kind "integer multidimensional activity",is basal information for earthquake prediction.