Abstract: In-depth comprehending of the pore water pressure and the deformation in the procedure of mucky soil's consolidation has a significant meaning to study the theory of soil's drainage and consolidation. Though the text of the mucky soil in Huangshi Area, by using the graded loading and once loading into same directional stress consolidation and unidirectional consolidation, to analysis the pore water pressure and the transformative rule during the whole process. The result indicates that two loading methods bring to different rules. Meanwhile the consolidation process will slow gradually when the pressure is lower to the threshold. The pressure will not as distinctive as the initial stage, even when the load is great. The mucky soil's consolidation in drainage has phases, it is caused by the change of the drainage speed about the free water and the leaked water. The main consolidation speed of the mucky soil is around 5minutes to 100minutes. If the consolidation pressure is close to the initial pressure, the consolidation coefficient is at the min. but the secondary consolidation coefficient is the max.