CiNii - About CiNii

About CiNii

CiNii(Scholarly and Academic Information Navigator, pronounced like "sigh-knee") is a database service which can be searched with academic information of articles, Books, Journals & Dissertations.
It is available free of charge for anyone.

"CiNii Articles" enables you to search information on academic articles published in academic society journals, university research bulletins or articles included in the National Diet Library's Japanese Periodicals Index Database.
About CiNii Articles>>

"CiNii Books" enables you to search information of books and journals held by university libraries in Japan.
About CiNii Books>>

"CiNii Dissertations" enables you to search information on dissertations written for doctoral degrees in Japan conferred by Japanese Universities and the National Institute for Academic Degrees and University Evaluation.
About CiNii Dissertations>>

Before using CiNii

Please read carefully the Academic Content Service Usage Regulations and CiNii Articles Service Usage Detailed Regulations before using CiNii. By using CiNii, you agree to both regulations.

Terms of use>>

System Requirements

Recommdended web browsers

  • Windows
    • Internet Explorer 11 or above
    • Firefox (latest versions)
    • Google Chrome (latest versions)
  • Mac OS
    • Safari (latest versions)


CiNii uses JavaScript. Please enable JavaScript to use CiNii, in the settings of the browser you are using. If JavaScript is not enabled, some pages may not function or be displayed properly.

Cookie Configuration

CiNii uses cookies. Please allow your browser to accept cookies, in the settings of the browser you are using. If cookies are not enabled, some functions may not be used. Details of cookie configuration, please see as follows:

Plug-in Requirements

Full text documents are available for reading from CiNii Articles and CiNii Dissertations in PDF format. Please obtain the latest version of Adobe Reader (6.0 or later is recommended) in advance.

If you get an error viewing a PDF, try uninstalling your Adobe Acrobat Reader and reinstalling the latest version. It has been reported that having copies of both old and new versions of Adobe Acrobat Reader on the same computer can causes an error, even if you have installed the latest version.
Download Adobe Reader>>

If you get error messages frequently, please refer to the following FAQ page.
Frequently-Asked Questions "What should I do if an error message is produced before I can see the content?">>