Abstract: In this paper, the influence of PVA addition on the fluidity, mechanical properties and wear resistance of cement mortar was studied, and the modification mechanism was analyzed.Resultsshow that with the increasing addition of PVA fiber, the fluidity of the composite mortar decreases gradually, flexural strength of the composite mortar cured for different days increases first and then decreases, and the unit area wear loss of PVA fiber modified composite mortar decreases first and then increases.