The study aims at book importation from China in the Latter Choson Period. It chiefly, achieved to concomitant with an envoy of a trimming policy. The pattern of book importations divided into public trade, private trade, Royal gift. Beyond the main stream of imports were Neo-Confucian books, a bibliographical study of Chineses classics books and Paegwan fictions (fictional narratives of oral natures compiled by local officials) including So-hag books that were at that time in the fashion were introduced into Korea. Like this, several pattern of book importation had an important effect upon closed Choson society.