The reservoir condition after the water flooding is different from the initial state，so the steam flooding mechanism becomes more complicated.Through the water drive after the steam drive，the physical model experiments can be utilized for the further understanding on the mechanism of oil increase，so as to guide the steam flooding plan design of the water drive oilfield.In this paper，on the basis of the water flooding and the steam flooding physical model experiment，the link between the physical model experiment similar criteria of water flooding and steam flooding has been established.By this criteria，some actual water flooding sandstone reservoirs have been modeled，with the establishment of reliable physical model of two dimension and triaxiality proportion.Based on that，two groups of experiment of the plane homogeneous reservoir steam flooding after water flooding and the vertical non-homogeneous reservoir steam flooding after water flooding have been conducted.Some parameters，like the development of steam flooding temperature field，the degree of reserve recovery，the variation of water content and the steam zone formation time under different experiment condition，have been obtained.The result shows that for the steam distillation，the displacement effect is the main mechanism in the steam zone，and the reasonable steam flooding pressure conversion is the key to steam flooding and the reservoir heterogeneity has some influence on the effects of steam flooding.