The President's Library of the United States mainly serves government officials, scholars and ordinary citizens. Anyone can read the president's file as long as he shows his ID card and explains the reasons. At the same time, various presidential libraries provide various services for the public, so that visitors can have a comprehensive understanding and understanding of the president himself, the institutional operation during his administration and the entire American political system. Over the past 60 years, the Presidential Library has collected and preserved a large number of documents, archives, historical materials and souvenirs, and made important contributions to the study of American politics, history and culture. The Presidential Library mainly serves scholars, government officials and ordinary citizens. As long as you show your ID card and explain the reasons, you can use the president's file, and the staff will take out the documents. Users can only read them in the library. Libraries usually set up special reading rooms for former presidents, which is a privilege that former presidents can enjoy. The Presidential Library has also filmed a series of historical or realistic films of public interest, and cooperated with educators to educate students by watching and giving feedback speeches. It is another way for the presidential library to serve the public to hold some public exhibitions and publishing plans and hold some symposiums and seminars on the collected literature. Every presidential library has a museum and exhibition hall to display exhibition documents, manuscripts and articles, many of which are precious works of art and souvenirs, gifts from foreign heads of state, gifts from important people and gifts from the poor.