Using long core flow and heterogeneous core flood experiments, dynamical resistance coefficient, distribution of viscosity and interfacial tension in flow direction and displacement effects, were given about the tertiary system of alkali/surfactant/polymer (ASP) and the binary system (SP). The results show that as the migration distance increases, the interfacial tension of effluent goes up, rising from 10-3 mN/m to 10-1~102 mN/m, and stabilizes at about 1 mN/m, and both have similar viscosity and interfacial intension before injection. Due to the effects of alkaline and surfactant concentration on interfacial activity of ASP tertiary system, its interfacial tension changes greatly. Alkaline favors the less viscosity loss of ASP tertiary system, thus it has higher viscosity retention and flow resistance coefficient. Under the experimental condition, ASP tertiary system is superior to SP binary system in improving displacement effects. In heterogeneous core’s flooding experiments, an average 5%~7% recovery of ASP tertiary system is higher than that of SP binary system with an injection plug of 0.4~0.6PV at 70% water-cut.