文章在回顾历史上美国反宣传法案实施案例，分析了目前网络自媒体虚假新闻渗透现象。美国总统2016年底签署了反宣传法案，在建立一个信息分析和反应中心的同时，还负责发布相关事件的真实正确信息，并向那些从事信息分析和收集、对抗外国谣言的公民、记者、社会群体、非政府组织及研究机构提供资金支持。作者认为，美国正在试图通过这个反宣传法案，完成信息传播平台传播权的一次转移，目标是让新闻真实与否由算法说了算，而普通人听算法的，算法听掌控算法的精英们的。

This thesis analyses the diosmose of the fake news spread via we-media, based on some cases since the American Counter-Propaganda Bill’s implementation. In 2016, American president signed the Portman-Murphy Counter-Propaganda Bill, which states that U.S will not only establish a “Global Operation Center”. This center will be responsible to do the information analysis and reaction, but also deliver the true information and provide fnancial support for the citizens, reporters, social groups, NGOs and research institutions who will analyze, collect and cope with the foreign rumors. The author hold the opinion that, by means of carrying out this Bill, U.S is trying to achieve this transfer of communication right of the information transmission platform. By this transfer, U.S will achieve its goal that the algorithm will decide the truth of news, and then people will listen to the algorithm, while the algorithm listens to these elites who bring the algorithm under their control.