Objective: To classify the herbs for the treatment of cancer pain. Method: Database of 25 commonly used herbs for was established by means of SPSS 11.5 software package; and the nature

tastes

meridian attributions and actions of the herbs were collected as variables showing the characteristics of classification

and the names of the herbs served as variables for measurement to proceed Q Cluster in Hierarchical Cluster. Result: The characteristic of the herb for the treatment of cancer pain is pungent

bitter

warm and the correspondent channels are liver and spleen. They can clear heat and detoxify

activate blood to relieve pain. Conclusion: Fuzzy grouping analysis can be applied to classify herbs

and can be guiding the clinical medication.