In order to overcome its defects of insufficient depth and dewatering long time, combining the soft foundation treating engineering of Yangzhong Haogang all-purpose wharf, the traditional dewatering-dynamic compaction is improved, in which moisture separator integrated wells dewatering-dynamic compaction is used to consolidate the soft foundation. Field monitoring and testing are carried out in two experimental sites, respectively the conventional vacuum wells dewatering-dynamic compaction, and another treated with the improved dewatering-dynamic compaction. The results show that dewatering depth of the improved dewatering-dynamic compaction could reach 5-6m below the surface, and the dissipating time of the pore water pressure after tamping is 1 to 2 days; the maximum settlement of the surface during the construction after the foundation consolidation is 0.606 m, thus the post-construction settlement is effectively reduced; compared to the conventional vacuum wells dewatering-dynamic compaction, both the soil strength and bearing capacity of the foundation have substantially improved. Thus it can be seen, the effect of the foundation consolidation is notable.