Abstarct: Recently, oil can be considered as one of the most important energy resources. Hence, experts and engineers are aimed at exploiting more resources by means of Tech-savvy generations. Foam injection is well known as an efficient method among enhance oil recovery theories. In this research, augmentation oil recovery by foam injection is utterly expressed in micro scale. Micro models are used in porous media due to better perception of direct flow. Microfluidic is defined as Lab-On-Chip that clarifies the knowledge of using and controlling a very little amount of liquid in very small devices. Microfluidic researches are focused on mixture and analysis of liquid flow. Microfluidics is served because of high quality, lacking of need to experimental samples and low cost. In this study, foam is pre-generated by flow-focusing microfluidic device as well as injection of Nitrogen gas at the same time by surfactant solution (SDS and TTAB) and injected into oil-wet and oil-saturated microfluidic device filled by paraffin. The quality of injected foam into the micro model can be changed by flow rate and gas pressure that in this practice, the foam is used by pressure and flow rate 300ml bar and 0.2 ml liter per hour, respectively. Solution of water-salt as a baxse fluid as well as SDS and TTAB surfactants are used that results indicate the decrease in the surface tension and oil-wet of microfluidc device in the presence of surfactant. Instability is caused by fingering in fluid injection that foam injection improves oil swiping in the micromodel, thus it brings significant enhancement in oil extraction.