Generally speaking, genre components can be divided into general component and proper component according to the flavor, but we also found across-genre component in the genre analysis. General component is the component which is commonly used in most of the genres, and proper component is the component which is only used or often used in a certain genre. The across-genre component is the component which is found in a concrete speech-work, but it is not the component which should be found in this kind of genre. It is the proper component which is borrowed from the other genre. We can find these three components in words, sentences, rhetorical figures, and texts. It is a very complicated genre phenomenon. To study these components is a basic project for the construction of genreology, and it also can promote the study of the other parts of linguistics positively.