To study the classification of on-site residual handkerchief paper plastic packaging bags,35 samples of different brands,different series and different colors were tested by Raman spectroscopy.According to the absorption peaks in Raman spectra,combined with K-means clustering method,different types of handkerchief paper plastic bag samples can be distinguished after the use of smooth function and similarity discrimination.The reproducibility and minimum detection amount are also investigated.These methods can protect the samples and has good reproducibility.Their objectivity is strong and they have low environment requirement.The paper provides a theoretical basis for the subsequent inspection to distinguish the contaminated and vulnerable fragments extracted.