This paper does research on the natural capacity of the synthetic rubber-gel system through indoor experiment in contrast to the gel system. It is proved that at the same temperature, mineralize, pH, the natural capacity of the rubber-gel system is better than that of the gel system. In the following plugging experiment, the plugging rate of the rubber-gel system is above 97% which is similar to that of the gel system; however its breakthrough pressure is 4.97 MPa/m which is much higher than that of the gel system, 3.08 MPa/m,and its washing resistance is also better than that of the gel system. When the water flooding is above 7 PV, its pressure maintains stable at 2.35 MPa, However, the pressure of the gel system reduces gradually after the 4 PV water flooding, and the stable pressure is only 1.12 MPa, which is much lower than that of the rubber-gel system; the plugging experiment of the different permeability states that the rubber-gel system has greater performance in high permeability layer.