The Five Mahayana Sutras（Hoke-kyo（法華経）, Kegon-kyo（華厳経）, 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 edition（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 Mahayana Sutras. The next was understood by consideration of this thesis.
1. A dependence book of "Nehan-kyo（涅槃経）" is Touzenji ban hokokuhon（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）.
This thesis continues after a next issue.