Objective: To evaluate the quality of Gardeniae Fructus based on grey incidence degree method. Method: Twenty samples of Gardeniae Fructus from different origins were collected to determine the contents of six main compositions. Then the quality evaluation models were set up by using grey incidence degree method. Result: The Gardeniae Fructus medicinal materials quality evaluation model was established

and an objective evaluation of the 20 samples from different origins was conducted

and the results showed that the relative correlation degree of all evaluation unit sequences was between 0.309 7-0.524 4.Seven batches of samples had a relative correlation degree above 0.450

which had high quality evaluation. Among them

batches 1

2

7

12 and 19 ranked top five in the quality

indicating that the samples produced in these areas had better quality. Meanwhile

the medicinal material texture was consistent with the current standards for the division of the product specification (maturity

fullness and color depth)

fully illustrating that grey incidence analysis results were consistent with the actual situation of medicinal materials. Conclusion: This study could provide a new method for comprehensive quality evaluation of Gardeniae Fructus medicinal materials.