Abstract: The seeds of Lolium perenne, Festuca arundinacea, Agrostis palustris and Cynodon dactylon were treated with simulated acid rain at pH 20,25,30,35,40,50 and 70(as control) to study the effects of acid rain on their germination. The results showed that the seeds germination of four turf grass under acid rain stress were affected at different levels. Acid rain intensity pH 20 completely inhibited the seed germination of turf grass, showing no germination was observed and germination energy and vigor index was 00. The seeds of L.perenne and F.arundinacea could germinate normally under acid rain stress (pH≥25),and the seeds of A.palustris could germinate normally under acid rain stress(pH≥3.0).The seeds of C.dactylon germinated poorly under acid rain stress. In addition, the process of germination became slow under acid rain stress.The comprehensive evaluation results derived from principal components analysis and subordinate function analysis showed the order (from strong to weak) of antiacid rain ability of the 4 turf grass seeds was F.arundinacea＞L.perenne＞A.palustris＞C.dactylon.