In order to improve the lubrication performance of the scroll teeth,a scroll compressor was taken as the research object.By analyzing the movement laws of the orbiting and static scroll body meshing points,the theoretical model of the fluid dynamic lubricant film between the side walls of the scroll teeth was established,the pressure distribution of the oil film was solved by the finite difference method,and the relationship between the carrying capacity of the oil film and the change of the spindle rotation angle,the spindle speed,the viscosity of the lubricant,the eccentricity and the height of scroll body was analyzed.The results show that the carrying capacity of the oil film first decreases with the increase of the spindle rotation angle,and will increase sharply when it reaches the exhaust angle,and then decreases again.Therefore,the carrying capacity of the oil film is the smallest when the rotation angle is close to the exhaust angle,which is most likely to cause lubrication failure.The carrying capacity of the oil film can be improved by increasing the spindle speed and using more viscous lubricating oil.The higher the rotation speed,the greater the influence of the viscosity of lubricant on the carrying capacity.The carrying capacity of the oil film is increased as the eccentricity increases.But too large eccentricity will lead to thinner oil film and increase wear,too small eccentricity will lead to larger tooth gap and increase gas leakage.Increasing the height of the scroll body can increase the carrying capacity of the oil film,but the increase is decreasing.