The heavy oil wastewater comes from the process that the saturated steam is injected into the oil reservoir so that it can reduce the viscosity of polymer solution, then the produced fluid is also decomposed through the oil and water. Wastewater not only consists of a lot of cation (such as Ca2+,Mg2+,Fe2+), but also a lot of anion (such as Cl-,SO42-,CO32-,HCO-3). The composition is very complex. It will bring a lot of economic, social, and environmental benefits if it is used by thermal recovery boiler after treatment. This experiment save the desilication which is one step of the traditional treatment of heavy oil wastewater,and choose two new types of resin to deeply soften the resin which has a good ability to adsorb wastewater. The experiment shows that the average hardness of waste water is 79mg/L before softened, the hardness is also not detected , so it reaches the standard of boiler reuse .