A gas chromatography-mass spectrometry method (GC-MS) based on internal standard was developed for rapid determination of N-methyl pyrrolidone (NMP) in dry food wrappings. The NMP was extracted from the sample by ultrasonic extraction. The final product was determined by GC-MS based on internal standard. Extraction efficiency of different solvents on target object was discussed; suitable solvent dosage was determined; extraction modes and conditions for different samples were compared; suitable internal standard object was selected; the characteristic ions and its abundance were determined; the influence of column flow, injection volume, and split ratio on separation of target object was analyzed and suitable chromatography conditions were obtained. The result showed that under the optimal conditions, the calibration range of NMP was 0. 02745 ~2. 196 mg/ L with a correlation coefficient of 0. 9999; the average recoveries were in the range of 98. 36% ~108. 29%; with relative standard deviations of 3. 71% ~6. 05%, the detection limit and quantitation limit of NMP were 0. 058 mg/ kg and 0. 194 mg/ kg respectively. The method was simple,rapid, sensitive, accurate, and suitable for rapid determination of NMP in dry food wrappings.