Abstract: Using gas chromatography-mass spectrometry (GC-MS) method to detect erucamide in three kinds of low density polyethylene films and study the migration of erucamide to food simulants. Using the threshold of toxicological concern (TTC) The contents of erucamide in three types of lowdensity polyethylene (PE-LD) films were detected by gas chromatographymass spectrometry (GCMS), and the migration of erucamide from PELD films to a simulant food was investigated. The threshold of toxicological concern (TTC) was also used to assess the safety of erucamide in foods. The results indicated that the erucamide standard curve presented a good linear relationship (R=0.999 3) in the range of 100~5 000 μg/L. The limit of detection of erucamide was 30 μg/L, the recovery were in the range of 78.3 %~115.6 % with a RSD of 2.9 %~11.6 %. The migration of erucamide increased with the increase of time, temperature and erucamide concentration in the certain range. The partition coefficient of erucamide between PE-LD and simulant foods increased slightly with the increase of erucamide concentration in PE-LD.