The Five Mahayana Sutras（Hoke-kyo（ 法華経the Saddharma Pundariks Sutra）, Kegon-kyo（華厳経the Avatamska Sutra）, Nehan-kyo（涅槃経）, Daijik-kyo（大集経）, Daibon hannya-kyo（大品般若経））were printed at Kofuku-ji（興福寺） in Nara. Those were called Kasuga prints（春日版）. Those were printed in the latter period in Kamakura era. The purpose of this thesis is to specify a dependence book of the Five Copies of Mahayana Sutras. The next things were found by this thesis.
１．A dependence book of Nehan-kyo（涅槃経）is Touzenji-ban hokokubon（東禅寺版補刻本）.
２．A dependence books of Kegon-kyo（華厳経）, Daijik-kyo（大集経）and Daibon hannya-kyo（大品般若経）are Sikei-ban（思渓版）.
However, I also found out that the difference between Kasuga edition and the South Song Dynasty Edition of the Buddhist Canon. About this difference, I wrote it down in this article.