Abstract: The effects of ferulic acid (FA) on content of endogenous hormone——indole acetic acid (IAA), gibberellin (GA), cytokinin (ZR) and abscisic acid (ABA) of wheat seedling are studied.The results show that the residual ferulic acid of culture solution was decreased very fast from day three to day ten. A fter two weeks up to 98% FA were not found.The contents of four endogenous hormones showed insignificant difference at 0.25mmol/L and a increase at 2.50mmol/L comparing with the contrast.The accumulation of IAA, GA and ZR in wheat inhibited the growth of wheat seeding and induced ABA increment.