By using gas chromatography/mass spectrometry and external standard method, the migration of main solvent residuals toluene and acetic ether of composite packaging film in different food simulacrums was determined. The food simulacrums were distilled water, 4% acetic acid, 65%ethanol alcohol, and normal hexane. At the same time, the influence of normal temperature stewing and ultrasonic treatment on residual solvents migration was compared. The result showed that migration in acetic ether is the lowest, which can deem as not detected; the migration amount of toluene in four food simulacrums from is ordered as normal hexane>65%ethanol alcohol> distilled water >4%acetic acid; ultrasonic treatment can speed up the migration and accelerate detection process.