Objective: The study was conducted to establish the method of degree incidence and to evaluate the safety of Angelicae Sinensis Radix from different habitats. Method: The contents of total ash

acid insoluble ash

Pb

Cd

As

Hg

and Cu in Angelicae Sinensis Radix were determined. The grey model was established by DPS V7.0.5 statistical software via the measurement of relative incidence degree. Result: The relative incidence degrees of all evaluation items were between 0.380 5-0.600 0; totally the relative incidence degrees from 25 batches of Angelicae Sinensis Radix were less than 0.500 0

which had better safety

including 9 batches from Min County

Gansu Province

3 batches from Weiyuan County

Gansu Province

3 batches from Zhang County

Gansu Province

and 4 batches from Yunnan Province

accounting for 90.0%

50.0%

60.0%

and 100% of the total number of their samples

respectively. The results based on the established model showed that the evaluation results were consistent with the genuineness meaning of Angelicae Sinensis Radix. Conclusion: This method and model can be well used to evaluate the safety of Angelicae Sinensis Radix.