With regard to cross-strait relations, Tai made his famous "testicles analogy." Taiwan is a part of China, he stated, just as testicles are a part of a man's body. Though inextricably linked to the body, the testicles have their own special functions.
對於兩岸關係，戴國煇提出著名的「睪丸理論」，認為台灣之於大陸，猶如睪丸之於人體，兩者密不可分，但又各有獨立功能；若睪丸被吸納入人體，對兩者均有害無益。