In preparation for dehydration and restoration of the fabric core of lacquer wares excavated from the Haiqu tomb site, a Han Dynasty tomb site in Rizhao city, structures and materials of nineteen samples were analyzed. Based on the analysis result, a film from a sample (Haiqu07) and one from a modern lacquer were analyzed by Fourier transform infrared spectroscopy and by thermal techniques. The main absorption peaks of IR spectra of the ancient film and modern lacquer are basically the same, which showed that the lacquer has good stability and resistance to aging, and has high thermal stability matrix with pigments. The results can provide some information for the study of ancient Chinese lacquer film.