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In this paper, we propose a method of concept similarity calculation based on multi-property ontology, in which the relationship among properties is established under the evolutionary and taxonomy theory. In order to test the accuracy of our concept similarity calculation, we build a model of the multi-property tea ontology at first. Then, to study the tea ontology properties evolution method, we provide property weight priority algorithms. Finally by comparing our calculating result with that in the other three methods, we safely conclude that our calculating accuracy is extremely high, and the result agree with opinions of tea experts.