Objective : To analyze and identify the buds of different germplasm resources of Lonicera japonica Thunb.cultivated in ShanDong. Method : Multi-steps infrared macro-fingerprint method(infrared spectroscopy

secondary derivative spectroscopy and two dimensional correlation infrared spectroscopy) was used to analyze the buds of different germplasm resources of Lonicera japonica Thunb. Result : In the one-dimensional spectra

there have some similarity among different germplasm

appearing the absorption peak of -OH in 3 371 cm-1

the absorption peak of -CH2 in 2 924 cm-1 and 2 853 cm-1

the absorption peak of C=O in 1 735 cm-1

the absorption peak of =C-O in 1 637 cm-1 and the absorption peak of C-O in 1 637 cm-1. In the second derivative spectra

there have significant difference among different germplasm between 1 800 cm-1 and 1 300 cm-1. Otherwise

the 2D-IR correlation spectra also have significant differences in the absorption strength

frequency and form. Conclusion : The FTIR Analysis is effective for the identification of the buds of different germplasm resource.