In the acknowledgement of People's Republic of China (China), the most sensitive issue in China-US foreign relation has been the "Taiwan Issue" even though after normalization in 1979. Tracing the major division on "Taiwan Issue", China strictly relays on China-US 「Three Communiqué」 while U.S. insists on 「Taiwan Relation Act」. So from the view point to the period of 2003~2015, the government of Taiwan had experienced twice "party alternation", the closer US got along with democratized Taiwan, the more frequently China's open opposite declarations spurred. Not only do such these declarations based on "One China Principle" from 「Three Communiqué」 intend to constrain the international behaviors of Taiwan, but also strongly reflect the unwilling to see the benefits of US-Taiwan interaction and arms sale based on 「Taiwan Relation Act」. Since the world politic is put weight on Asia-pacific area, Taiwan Issue shall remain to be the nonsmoking fighting scenario of China-US diplomacy.