The emergency of the Taiwan question is, at heart, the outcome of intervention of foreign forces.

Relying on the support of the United Sates, the Chiang Kai-shek clique launched an all-out civil war in 1949, but retreated and occupied Taiwan after suffering defeat. In June 1950, the United States sent the 7th Fleet to invade the Taiwan Straits and the 13th Air Force to enter Taiwan and be stationed there. In December 1954, the United States concluded with the Chiang Kai-shek clique a so-called "Mutual Defense Treaty", placing Taiwan under U.S. "protection", leading to the prolonged and intense confrontation in the Taiwan Straits area. After the establishment of diplomatic relations between China and the United States, the United States went to the length of formulating and passing a so-called "Taiwan Relations Act", continuing to disrupt the reunification of Taiwan with the mainland of China. In recent years, the anti-China forces in the U.S. Congress once again set off a counter current to contain China. On May 23, 1995, the U.S. government approved Lee Teng-hui's visit to the United States. This was a serious incident of arrogant interference in China's internal affairs.

The intervention of foreign anti-China forces in the Taiwan question is aimed at making the Taiwan question internationalized and obstructing the reunification of China. The United States and other Western forces support the Taiwan authorities to carry out "pragmatic diplomacy" (namely, a diplomatic policy not based on the principle of one China) and give secret encouragement to Taiwan in its urge to enter the United Nations Organization. Their attempt is to change Taiwan's status as a part of the Chinese territory and create "two Chinas" or "one China, one Taiwan".

In recent years, the foreign anti-China forces have stepped up their intervention in the Taiwan question. It is because they have seen the tremendous development of China since its reform and opening to the outside world and regarded China even more as a potential threat and been unwilling to see China become reunified and strong. They want to make use of the Taiwan card "to play off Taiwan against China" in an attempt to check and contain the development of China. The Taiwan question is purely China's internal affair. The interference in China's internal affairs in any form by any foreign forces is bound to meet with the firm opposition by the Chinese people including the people in Taiwan.