Abstract: In this paper, two earth system models, i.e., CAS-ESM (Earth System Model, Chinese Academy of Sciences) and NCAR CESM (Community Earth System Model, National Center for Atmospheric Research), are used to carry out a series of simulations with different parameterizations and horizontal resolutions, and the daily precipitation characteristics of Eurasia are analyzed. Four 19-year (1998–2016) Atmospheric Model Intercomparison Project simulations have been conducted in this study. They included CESM with the Community Atmosphere Model version 5 (CAM5) physics package at a resolution of 1.9°×2.5°, CAS-ESM with the CAM4 (Lcam4) and CAM5 (Lcam5) packages at a resolution of 1.4°×1.4°, and CAS-ESM with the CAM5 package at a resolution of 0.5°×0.5° (Hcam5). Compared with GPCC (Global Precipitation Climatology Centre) and CMORPH (CPC MORPHing technique), both models competently reproduced the climatological means of precipitation and extreme precipitation. However, the two models overestimated precipitation frequency and underestimated precipitation intensity. CESM produced the smallest biases in the number of heavy rain days, and Hcam5 showed added value for maximum daily precipitation. For CAS-ESM, both the physics package and horizontal resolutions impacted daily precipitation characteristics. Noticeable improvements in precipitation characteristics were demonstrated by Hcam5. The precipitation frequency of Lcam4 was higher than that of Lcam5 in the middle and high latitudes of Eurasia. Over eastern China, the biases of precipitation frequency for Hcam5 were smaller than those of Lcam5, and the high-resolution model distinctly improved the simulation of extreme precipitation. Further, compared with Lcam5, Lcam4 produced more large-scale precipitation and stronger water vapor fluxes over Europe. Over eastern China, improvements in daily precipitation frequency and extreme precipitation related to the reduction in convective precipitation frequency, greater large-scale rainfall, and stronger water vapor fluxes.