The influence of perforated wall on subsonic and transonic wind tunnel tests is studied. The goal is to quantify the effects of the wind tunnel walls and characterize the key parameters affecting the flow field in order to construct a numerical model and realize experimental data corrections. With the numerical simulation analysis, a simplified 2-D perforated-wall model and a porous-medium-type wall model are established for a transonic perforated-wall wind tunnel. The effect of porous wall on the flow field of transonic airfoil wind tunnel is numerically simulated. The effect of parameters such as porosity of the perforated wall is analyzed. The porous-medium-type wall model is studied to provide a new method to simulate the flow field of perforated-wall wind tunnel. It would be helpful for the investigation of the wall effect in wind tunnel tests in the future.