We enriched and organized the basic knowledge database and integrated expert experience into the rules for early post-earthquake trend decision,and then implemented the intelligent template technology to build the early aftershock analysis and forecasting system. It could automatically output the basic earthquake information,tectonic background,the historical seismic activity,seismic mechanism and sequence type statistics,the post-earthquake trend opinion or other related graphics,Word,PPT reports and finally push them up to multi-platform push under the control of permissions. The eight-month-long trial operation results show that more than 90% of the earthquake case products are produced within 5 minutes. About 80% of the automatic opinions are basically consistent with the results of the artificial decision,and the magnitude differences are less than 0.5 magnitude. What's more,the conformity of the system automatic output and the actual post-earthquake is better than the results of manual results.