清光緒、宣統年間，那桐出任戶部尚書、外務部尚書、總理衙門大臣、軍機大臣、內閣協理大臣等重要職務，並兼理京師步軍統領、工巡局事務，對清末新政的推展亦有諸多貢獻，是中國近代史上的重要人物。目前，學界對於那桐兩次出使日本的研究甚微，是故本文以新近出版的《那桐日記》，輔以相關的檔案和資料，梳理二十世紀初那桐赴日解決辛丑善後事宜，及其後參加大阪勸業會的歷程。並且，在此基礎上，進一步剖析那桐對清末新政的推展和影響。

In the late Qing period, Na-Tung served an important post as President of the Book of State, President of the Book of Ministry of Foreign Affairs, Minister of Tsung-li Ya-men, Minister of Grand Council, Minister of Grand Secretary, Command of Gendarmerie in Peking. He was an important official in the government. The paper uses main Na-Tung Diary, archives and source books to deal with Na-Tung doing expeditions to Japan, and then analysis the influence to the new policy in the late Qing period.