The qualitative and quantitative determination of antioxidant 1010 in polyethylene (PE) and polypropylene (PP) by the Fourier Transform Infrared Spectroscopy (FTIR) is presented. The FTIR spectrograms of antioxidant 1010, PE and PP are analyzed, the characteristic absorption peak of antioxidant 1010 is determined at the wavenumber of 1746-1 and the influence of the PE and PP test parts containing a given quantity of antioxidant 1010 on the measured spectrograms and curves is analyzed in detail. According to the standard curves of the antioxidant 1010, the content of the antioxidant 1010 bear a good linear relationship with the absorption strength of its characteristic peak. Their correlation coefficient is greater than 0.98 and the antioxidant 1010 has a recycle quotiety of 90.0% at least. This research work is useful to the determination of the qualitative and quantitative determination of antioxidant 1010 in polyethylene (PE) and polypropylene (PP) and is of great significance to the analysis of the effect and modification of antioxidant 1010 in PE.