Abstract: Beginning with the essence of united front,this paper expounds the theoretical and practical significances of united front as an important trump for governing and prospering country:its universality shows the essence of broad unity and is propitious to consolidation and enlargement of reigning basis of the Party;its democracy breaks a new path of airing one's opinions freely and favors the perfecting of reigning system and mode of the Party;its containing makes for an influx of wisdoms in every walk of life and enrichment of reigning regime of the Party.The united front is possessed of great theoretical and practical significances for the Party to unite the people in a wider range,carry the democracy forward more adequately and enhance the reigning ability.It is still an important trump for governing and prospering the country.