Abstract: In view of low utilization ratio of later stage steam during steam simulation in Shanjiasi heavy oilfield,developed multi-efficiency combination flooding system,it has capacities of profile control,washing oil and decrease viscosity.As one of surface acting agent,Frother can decrease interfacial tension of oil and water,researched synergetic effect of different surface acting agent,optimized foaminess and interfacial of surface acting agent, realized mobility control of steam,advanced recovery ratio of steam simulation production pattern.