Based on the volume of fluid(VOF) two-phase flow model， combined with adapt mesh refine(AMR） technique， overset grid technique， and dynamic mesh technique， a calculation model of the splash process of the con rod big end hole oil injection was established. The reliability of the model was verified. The splash process of oil injection was analyzed，and the influence of oil injection velocity and the con-rod big end hole deflection angle on the amount of oil on the cylinder wall was discussed. The results show that the lubrication effect of the left cylinder wall is better than that of the right cylinder wall during most of the engine working time. Higher nozzle injection speed can lubricate the right cylinder wall earlier and improve the lubrication condition of the right sidewall. Proper right deviation of the fuel injection hole can also lubricate the right cylinder wall in advance，improve the lubrication of the right cylinder wall，and make the oil distribution on both sides of the cylinder wall more even. However， when the jet hole deflection angle is large，it will affect the lubrication of the left cylinder wall. In order to make the oil distribution on the left and right sides of the cylinder wall more uniform

when the ingection velocity of the injection hole is large

the angle of injection hole to the right should be larger.