Abstract: To identify and classify the material evidence of lipstick based on fingerprint of Raman spectrum.The oral red marks of different brands and models were characterized by microlaser Raman spectroscopy,and the feasibility of identifying and classifying them was studied.The variation rule of the Raman characteristic peak of oral red marks with time was investigated,and the possibility of exploring its residual time was attempted.The lipstick brand can be distinguished and the remaining time of lipstick can be predicted by laser Raman spectroscopy.