The activity of documentation concerns itself with finding, selecting, cataloguing and disseminating documents relating to childhood and adolescence and produced in the regulatory, bibliographic, statistical and filmographic fields. The resources can be paper and electronic. The catalogued documentation can be accessed from the Catalogue of the A.C. Moro Innocenti Library .

As of 2010, the statistical documentation has no longer been updated in the catalogue and can be found in the Analysis, research and monitoring  section of the website.

The documentation activity also includes the creation of web products and publications such as the Childhood and Adolescence Bibliographic Review with its supplements Thematic Routes, the Bulletin of the Library's new bibliographic and legal entries, reviews and legal comments.

For the treatment of the documentation, specific catalographic tools have been developed: the Childhood and Adolescence Classification Scheme used to classify and place the documents and the Italian Th.I.A.-Thesaurus of Childhood and Adolescence used for the subject-determination of the documentation.

The users to whom the documentation activity is addressed include the institutional bodies of reference, professionals and service operators, scholars and students, but also individual citizens interested in the topics addressed.

The public service for the consultation and lending of documents is provided by the A.C. Moro Innocenti Library, created in collaboration between the Istituto degli Innocenti and the UNICEF Office of Research - Innocenti, in agreement with the Italian Government and the Region of Tuscany.