Local taxazation authorities take full responsibility in collectiong social insurance after the stage of collecting in the name of social insurance administrations.The characteristics of the collection are summarized in the following numbers：one collecting subject，two social insurance bases，three information platforms，four system links，five social insurance collections. The achievements of collection are represented in four aspects：continuous growth of social insurance fund，expanding coverage of social insurance，increasing perfection of working mechanism and improved efficiency of collecting. However，six problems still exist in the system，namely，social insurance base hasn't been approved by a unified institution，data sharing between sectors is relatively lagged behind；social insurance base and related policy aren't clear enough，the inspection of social insurance by taxazation authorities has risks in the law implementation，there are concerns over the phenominon of “social insurance agency”，and professionals and policy publicity need to be enhanced.