The effects of different rheological models on elastohydrodynamic lubrication(EHL) numerical solution of low viscosity Squalane lubricant were studied with the Carreau rheological model and Eyring rheological model.The friction coefficient of Squalane lubricant varied with the slidingroll ratio under different entrainment velocities was calculated with Carreau rheological model and Eyring rheological model,and was compared with the experimental values.The friction coefficient,the highest oil temperature,the central and minimum film thickness varied with the slideroll ratio,the entrainment velocoty and the maximum Hertzian pressure for Eyring model and Carreau model were compared.Results show that,when the slip ratio is smaller,the friction coefficient of the Eyring rheological model is closer to the experimental value,however,when the slip ratio is relatively large,the friction coefficient of the Carreau rheological model is closer to the experimental value.There is no influence of slideroll ratio on the difference between the numerical solutions of different rheological models.With the increasing of the entrainment velocity,the film thickness of Eyring rheological model is higher than that of Carreau rheological model,but the maximum oil temperature of Eyring rheological model is less than that of Carreau rheological model.With the increasing of the maximum Hertzian pressure,the maximum temperature of the oil film and the friction coefficient of Carreau rheological model is higher than that of Eyring rheological model.In general,the Eyring rheological model is more suitable for EHL analysis of low viscosity Squalane lubricants under mild conditions.