Abstract: Cyclocarya paliurus seeds germinated on the seeond year or the third year in nature. It belonged to a type of comprehensive dormancy. In the paper, the changes af endogenous hormones in the integrative treated C. paliurus was studied. The resuhs showed that the abscisic acid (ABA) in the C. paliurus seeds reduced gradually, but the gibberellic acid (GA), indole-3-acetic acid (IAA) and cytokinin (CTK) increased at the same time. The ratios of gibberellic acid (GA)/abscisic acid (ABA), indole-3-acetic acid (IAA)/abscisic acid (ABA), cytokinin (CTK)/ahscisic acid (ABA) increased uhimately. The experimental results showed that GA promoted seeds germination, and indole-3-acetic acid (IAA) and cylokinin (CTK) affected the seed’s germination, too.