The Anti-Secession Law of 2005 was adopted at the Third Session of the Tenth National People's Congress of the People's Republic of China on March 14. After the session, Chinese Premier Wen Jiabao met the press by saying that “It is not a law of war but the one for pursuing the peaceful reunification of China. It is also not a law for changing the status quo in Taiwan Straits but rather the one for maintaining the peace and stability in this region.” The responses from Taipei Authority and the people in Taiwan were obviously strong. They all opposed to the Anti-Secession Law. Contradicting the viewpoints from Beijing, Taipei believed the law against the Taiwanese's will. What is the actual position of the Anti-Secession Law, war or peace, may cause a controversy between Beijing and Taipei due to the huge gap of their different viewpoints. The influence of the Law conducted by Mainland China to Taiwan, even international society, is worth of analyzing its potential developments. Besides, there are also several issues for Beijing to be clarified. For example, whether will the result cause the negative or positive impacts after the traditional Taiwan policy is replaced by the Law, or how will the Beijing authority handle the Taiwan Problem under the Anti-Secession Law, especially in its position as the domestic law, since Beijing has not yet provided the political definition to Taiwan either in Chinese Constitution or in Chinese law? Finally, the focus will place on the impacts from the further developments of the Anti-Secession Law. We all find the deliberate control taken by Beijing and self-control appeared in Taipei in the short term. What will be for the both sides of the Taiwan Strait in the long range is worth to observe.