Ferulic acid is regarded as a kind of very useful nature antioxidation for edible oil.The structure,infrared and the raman spectrum of ferulic acid were calculated using density functional theory(B3LYP) and Hartree-Fock method at 6-311+ +G* * level.The calculated results showed that B3LYP and HF methods had accordance on equilibrium geometry and frequencies.The vibrational modes of ferulic acid were assigned and compared with the experimental datas from SDBS database,the calculated results were in good agreement with the experimental resu...