Chinese stress distribution and sound long rule's research abstract to the Chinese stress's accurate assurance, is helpful to the reduced spoken language different meanings phenomenon. In the foreign Chinese spoken language teaching practice discovered frequently the student says even if the sentence does not have the grammatical error, but sounds the phenomenon which actually the language does not express one's ideas. After the analysis, we discovered that this kind of phenomenon many are not correct creates because of the stress position. On the other hand, the antithetical couplet stress's feeling becomes aware, is helpful to the solution sentence semantics as well as the paragraph significance primary and secondary question. this article introduced the stress commonly used research technique and the elementary knowledge, have studied the article language transition system's composition as well as the stress when the pitch and long aspect acoustic feature. Has designed the linguistic environment, and separately and to records to its sound recording carries on acoustics parameter the extraction, has obtained when the sentence stress emphasis word unstressed syllable, word when long increases the main performance for the unstressed syllable when long increases conclusion. key word: Stress non-stress article language transition system pitch and when is long