Diversity of reproductive factors expressed obviously among all the sampling sites of O.rufipogon Griff.in Gaozhou.Path analysis was studied about 141 accessions involving pollen fertility,anther dehiscence index,embryo sac fertility and seed setting rate.The results showed that seed setting rate of 61.17% was effected by pollen fertility,anther dehiscence index and embryo sac fertility,in which anther dehiscence index(the path coefficient reached 0.6495) was the most important factor.Pollen fertility and embryo sac fertility had almost the same direct effect on seed setting rate,and their direct path coefficients were 0.2356 and 0.2137 respectively.Indirect path coefficient of pollen fertility via anther dehiscence index reached 0.2960.O.rufipogon Griff.of 141 accessions were classified into four groups by cluster analysis,to which the variance analysis and the Duncan's multiple comparison test were employed.The details were as follows: In the first group,all the pollen fertility,anther dehiscence index and embryo sac fertility had effects little on the seed setting rate.Seed setting rate is mainly affected by embryo sac fertility in second group,which is affected by anther dehiscence index in the third group,which is affected by anther dehiscence index and pollen fertility in the fourth group.