Abstract: The pilot experiments in oilfield show that hydrophobic and lipophilic polysilicon is used in some low permeability formation and it is good for enhancing the flooding.In this paper only discusses polysilicon’s solving ability for organic substance’s block,and studies the polysilicon’s properties in part.Static and dynamic experiments can measure the solving rate of organic substance.The ratio of solution Kr used as a parameter for quantify analysis. And in dynamic experiments,it is obvious that the solving rate by polysilicon is faster than diesel oil.But solvency ration is similar with the static state. The micro-observe through glass model can prove directly that polysilicon’s solvency is better than diesel oil.The experiments considering the reservoir enviroment prove that polysilicon’s slovency to organic substance can improve rock’s permeability and it is one of very important part to enhance flooding mechanism.