This paper focuses on the White Terror in postwar Taiwan. It covers 5 sections. The first is a prelude. The second discusses the control mechanism of the government at that time. The third deals with the two issues of the White Terror-”bandit spies” and ”Taiwan independence”. These two were in strong opposition to the government's policies, and thus prohibited and punished with The Rebel Regulations. The fourth section provides evidence of the White Terror with anecdotes from literature, mass media, education, performing arts, religions, the army, and the general public. The last section is a conclusion, touching upon related issues such as the relationship between the politics and law, the social status of the political criminals, the situations of the intellectuals, and the nature of state violence during the 1950s. After the martial law had been lifted in 1987 and the party alternation in power completed in 2000, many political cases of injustice had been reversed. However, the access of archives and the relative studies both need to be enhanced.