However, Kirishitan-ban for which at least 50 publications were printed and published by the western printing art for the first time in East Asia, was an important paper publication in the history of books and printing, and was valuable material also in the linguistic history because Japanese colloquial expressions at that time were described in Roman characters.
しかし、50点以上の出版物が刊行され、また東アジアではじめて西洋印刷術によって印行された、書物・印刷史上重要な刊行物であり、ローマ字表記された当時の日本語口語文など、言語史上にも貴重な資料になっている。