Abstract: The choice of social consultation system is dominated by macro institutional environment，whose political variables，including new ideas，political legitimacy，and ideology not only constitute a sequence structure with the system itself，but also with other systems as well.Embedded in social consultation system arrangement,this sequence structure forms a mutually-effected and mutually-restricted situation between its actors and other relative behavioral agents，hindering or promoting the practice of social consultation system.It is essential that the Party’s leading role should be fully played so that socialist consultative democracy can be innovated developed widely.

Key words: social consltation system, political variables；institutional execution；institutional efficiency