Thesis excerpt 一、Research target: The target is to promote pop songs’position, and define the era meaning. 二、Research resource: The resource: books, periodical papers, master thesis, doctor dissertation, newspapers, phonograph records, web sites, TV programs, files of government, librettos. Includes literature, music, society, history, culture, politician, economics, movie, disseminaition. 三、Research method: The method includes reference research and theory explanation. 四、 Research result: Songs extent cannot be prohibited. Pop songs include literature value, era meaning, and related with dissemimate media directly.