Objective: To datalize the property and quality of Chinese medicine

identify the different species of Citri Reticulatae Pericarpium by its color information after using spectrocolorimeter

and provide a new method and idea for the study of common technical problems of traditional Chinese medicine. Method: Citri Reticulatae Pericarpium herbs were collected nationwide

and its color information was obtained by using spectrocolorimeter. According to the statistical analysis

a mathematical model for the identification of Citri Reticulatae Pericarpium species and 90%reference value scale were established. Result: A mathematical model for the identification of Citri Reticulatae Pericarpium species based on L*a*b* chromaticity space was established

with a coincidence rate of 100%; bilateral 90% reference range was as follows Citri Reticulatae Pericarpium: L*(66.621 5-73.916 5)

b*(29.329 5-52.211 0); Citri Reticulatae Chachiensis Pericarpium: L*(53.950 0-63.260 0)

b*(24.610 0-30.770 0). Conclusion: The color information from spectrocolorimeter can be used to accurately identify different species of Citri Reticulatae Pericarpium.