Objective: To develop the method of Ultraviolet spectrum quad (UV)-chemical pattern recognition for the identification of Ligustri Lucidi Fructus and the fruit of Ligustrum japonicum. Method: Ligustri Lucidi Fructus and the fruit of L. japonicum were exact parallelly by four solvents including petroleum ether

methylene chloride

ethanol and water. Ultraviolet spectra of each fraction was scanned and the absorbance at different wavelengths was extracted at regular intervals for principle component analysis

Q-type clustering analysis and Fisher discrimination analysis. Result: Based on the results of principal component analysis and the Q-type clustering analysis

the discriminant function was established as follows:Y=-0.810+5.035Z1

p+3.645Z2

p-5.992Z3

p-5.609Z1

m+3.569Z2

m+6.519Z3

m-54.267Z1

e+6.901Z2

e+35.281Z3

e+13.334Z4

e+12.349 Z1

w-35.806.Z2

w. The accuracy of retrospective assessment was 100% in our experiment

and the UV-chemical pattern recognition method was established to identify Ligustri Lucidi Fructus and the fruit of L. japonicum. Conclusion: This method is scientific

accurate and simple

which can be used for the quick identification of Ligustri Lucidi Fructus and the fruit of L. japonicum.