Abstract: Canopy interception is an important part of the surface evapotranspiration process. Analyzing the influence of canopy interception on evapotranspiration process has a positive effect on improving the accuracy of evapotranspiration simulation. The leaf area index（LAI）based on remote sensing Penman-Monteith model（PML）divides evapotranspiration into two parts:soil evaporation and vegetation transpiration. However,few researches focus on the effect of canopy interception on evapotranspiration and energy distribution. According to the observation data of Wangdu Station in 2020,the parameters of PML model was calibrated and the evapotranspiration was simulated by adding canopy interception module. The results indicate that:（1） the improved PML model achieves high accuracy in Wangdu Station,and the R~2 between simulation and observation is 0.71；（2） the canopy interception accounts for 3.14% of the total annual evapotranspiration and 4.37% of the annual rainfall. The soil evaporation accounts for the largest proportion during the year；（3）with the consideration of canopy interception,the energy for soil evaporation decreases by 3.46% and the energy for vegetation transpiration decreases by 5.10%. This study provides a reference for understanding the effect mechanism of canopy interception on evapotranspiration components of PML model.