In order to study the influence of groove position,depth,inclined angle and area ratio on the tribological performance of misaligned journal bearing,the mathematical model of friction and lubrication of journal bearing was established based on Reynolds equation.The oil film pressure under the influence of different groove micro- texture parameters was solved iteratively by finite difference method,and the bearing load capacity,friction and end leakage of bearing under different texture parameters were calculated.The results are as follows:the bearing load capacity is higher when the groove micro-texture is distributed in the boost area and the axial ratio of groove is about 50%; the friction of the micro-texture bearing is lower compared with the smooth bearing,and the larger the axial ratio and depth of the groove are,the lower the friction is; the micro-texture has the dual possibility of weakening and enhancing the bearing load capacity,and there exists the optimal circumferential and axial ratio,depth and inclined angle of the groove,which makes the bearing have higher load capacity under less friction; the area ratio of groove micro-texture is linearly correlated with bearing capacity and friction; the smaller the misalignment of the journal bearing is,the better the tribological performance of the journal bearing when machining the micro-texture with appropriate parameters on the smooth bearing bush surface.