The main point of this article is to study the change and development of constitutional government of R.O.C. in Taiwan. The development process has not been a smooth one. Because of the practice of strong-man role, the enforcement of war-time emergency laws and the absence of new election, the road to constitutional governemnt was indeed bleak and challenging. However, with the emergence of social democratic forces, the abolishing in 1991 of the war-time "Mobilization and Suppression" rules, the National Assembly, when reconstructed after a new election, is planning to return the constitutional government to its normal course.