Shaku-makaen-ron is anonymous commentary on the Daijyo-kisin-ron (大乗起信論). This article is a translation into the today's Japanese language of Shaku-makaen-ron Vol.IV. The main subject of this volume is an explanation of the concepts Nonenlightments (不覚) in Daijyo-kisin-ron, and they have Three aspects which are bound to nonenlightment (三細), Six aspects which are bound to Three aspects (六麁), Mind (意), Consciousness (意識), and Six kinds of defiled states of mind (六染心) etc. This subject following the explanation of Enlightment (覚) in Vol. Ⅲ (巻第三) analyzes the structure of birth of human's afflictions, and Vol, Ⅴ (巻第五) shall analyze mutual effects between Enlightment and Nonenlightment, that is Permeation (熏習). An important difference of understanding the truth (tathata) between Kishin-ron and Shaku-makaen-ron is as folows. Buddhism declares that worldly things are equal to the Buddha's sphere of enlightenment. Kishin-ron and Shaku-makaen-ron is as folows. Buddhism declares that worldly things are equal to the Buddha's sphere of enlightenment. Kishin-ron and Hozo's Kishin-ron-giki (起信論義記) understand this matter from the point of equality of atoms (微塵) that are foundation of both worlds. On the other hand, as Shimamura Daishin has clarified in Chizan Gakuhou No. 56, Shaku-makaen-ron says, through Manjusri-bodhisattva's words, that in the Buddha's sphere there should be no indivisual item, there is not even an atom as an indivisual ('Manjusri-bodhisattva does not see any atom in the world"). From this difference we can see that Shaku-makaen-ron tried to establish its own standpoint beyond Daijo-kishin-ron.