Because of the Dynamic Drainage Consolidation method’s complexity, the dynamic characteristics of soft soil is not be described by conventional analytic method. In this paper, Numerical simulation was conducted by use of FLAC3D. And effect of reinforcement was analyzed under the different influential factors. These factors include rammer weight, rammer falling distance, rammer radius and ramming energy. Furthermore, the field test was carried out to verify the numerical simulation, the conclusions have theoretical guidance meaning for researching the consolidation mechanics and improving the construction method of Dynamic Drainage Consolidation.