To reveal the effects of surface texture on the performances of journal bearings, the three-dimensional models of journal bearing with circular, squared and triangular texture are built. The models are simulated with CFD method based on the Navier-Stokes equation considering the cavitation effect and turbulence effect, and the performances of journal bearings with different texture shape, location, density and geometry are analyzed. The results show that, when the surface texture is distributed in load carrying region, the load carrying capacity of journal bearing can be improved, the fluid flow and friction coefficient can be reduced and the bearing with squared texture has a better load carrying capacity. There is an optimal combination of density, width and width-depth ratio of texture for the journal bearing to reach the largest load carrying capacity.