The purpose of this study is that we used the different degree of the Organic reagents to modify the bentonite in Xinjiang Tuokexun. In order to further expand the applications of bentonite, we mixed the modified bentonite with the asphalt to improve the properties of the waterproof materials.. To improve the compatibility between the bentonite and asphalt we chosed the cetyltrimethylammonium chloride (CTAC) and the sodium dodecyl sulfate (SDS) to modify the bentonite with different degree of the modification. We also analyze the modified bentontite though the XRD, IR, SEM and other means, for example, the particle size, organic carbon content and the swelling properties, In the end, we mixed the modified bentonite with the asphalt, and we also study the storage stability, capacity of plugging, high temperature stability, low gentle toughness stability and other properties of the modified asphalt.. The main findings are as follows: (1) When the added amount of the CTAC was small, the main manner of the absorption is the absorption in the surface. When the amount of the CTAC reached to 20%, it will enter the space between the layers instead of the iron, which caused the increase of the space between the layers. The modified bentonite with SDS is the surface absorption (2) When the amount of the CTAC reached to 6%, the swelling properties is disappeared. When SDS reached to 8%, the capacity of the expansion will turn to 45mL and will not change. (3) The modified bitumen will exhibit higher storage stability when the introduced amount of the modified bentonite into the bitumen is within 30%. The result of the study show that the waterproof will be better and the storage stability will higher if the capacity expansion is 20ml CTAC. (4) The high-temperature stability, temperature sensitivity and the stability of the atmosphere of the waterproof will be better than the original bentonite after the experiment.