With a combination of mean cross section and Mott model,differential cross section,total cross section and angular distribution of electron elastic scattering in liquid water with energy below 10 keV are calculated and systematically compared with those of Rutherford model and experiment.Elastic scattering of low-energy electrons in liquid water is simulated.The method is reliable and can be applied conveniently to the simulation of track structure of low-energy electrons in liquid water.