Academic circle always regards the time when Gorbachev was in power as the late time of Soviet Union communists. Since the beginning of 1985 when Gorbachev became General Secretary of Soviet Union communists, he was willing to use reform to make Soviet Union wipe out accumulated malpractices to revitalize healthy development of Soviet Union. In order to eliminate the obstructions of the reform, he proposed the principle of “Publicity” and “Diversification of Public Opinions” in order to ease the restriction on massive media, he tried to use journalism liberalization method to create social democratic state with the contention of many schools of thought so as to push forward the reform process of politics and economy of Soviet Union communists. However, the facts prove that a series of thoughts of Gorbachev deviated from the practical situation of Soviet Union and finally resulted in the extinction of Soviet Union communists and the disassembly of Soviet Union. Reunderstanding of the connotation, feature and essence of journalism liberalization at the late time of Soviet Union communists not only has academic value and but also has earlywarning significance.