The contents of IAA, GA3 ,ABA,ZR were compared between male sterile lines and their maintainer lines of eggplants buds at different developmental stages by using ELISA. The results show that the contents of IAA,GA3 ,ABA in male sterile lines were higher than that in maintainer lines. The content of ZR in maintainer lines were higher than that in male sterile lines, and there were different changes in the male sterile lines and the maintainer lines.