[Relationship between chemical constituents and herbs properties of relative plant herbs]

The material fundament of Chinese herbs is chemical constituents which represented the properties of herbs, including five fundamental natures (cold, cool, neutral, warm and hot), seven flavors (sour, bitter, sweet, salty, acerbity, mild and pungent) and twelve meridians (liver, heart, spleen, lung, kidney, Xin Bao, Gall bladder, small intestine, stomach, large intestine, bladder and San Jiao). In this article, authors study the relationship between chemical constituents of plant herbs and their properties. First, authors build a relationship network where the herbs with similar chemical compositions are connected each other. The particular difference of our work is to filter the common chemical constituents that many plants from different families contained. As a result, considering relative plants have similar chemical constituents, the relative plant herbs are clustering closely and the herbs of different family are connected loosely in our network. The results indicates that the method of building the herbs network is correct. The characteristics of herbs' properties in the network are that the same properties are usually connected regardless the plant families. There is "properties hole" phenomenon, that is, the majority of adjacent drugs of a herb have a certain properties, while the drug does not have the properties.