As we know the idea of `Dharma-Dhatu-Pratitya- Samutpada (法界緣起) in Hua-Yen Buddhism is a kind of "Chinese style thinking" Buddhist philosophy in Chinese `Mahayana` Buddhism. The `Gandavyuha-sutra` always said "the three categories of life (`tri- dhatu`; 三界) is unreal，they are only created by one-mind (eka-citta; 一心)"(三界虛妄，唯是一心作). Therefore，this one-mind seen as a real-mind to generate the `Dharma-Dhatu-Pratitya-Samutpada` (the relative existence of the world)，so we may feel very suprise to those metaphysical systems of Buddhism. However，it is impossible for the isolation or the great jump of the formation of idea, in other words, the formation of the idea of Buddhism must depend on the long historical development. According to the historical view，even though the structure of the idea of Hua-Yen Buddhism is very complicated，indeed，we still believe that we can also find out the historical route of the idea.
So the end of this Dissertation is trying to find out the historical route of the idea between `Dharma-Dhatu-Pratitya-Samutpada` and `Tathata- Pratitya-samutpada` (真如緣起) by the historical reductive method.
Therefore，the idea of `Dharma-Dhatu-Pratitya- `Samutpada` really depents on the long historical development of `Karma-Pratitya-Samutpada`(業感緣起), `Alaya-Pratitya-Samutpada` (賴耶緣起), `Tathata-Pratitya-Samutpada` (真如緣起)，even of the `Tathagata-Pratitya-Samutpada.` In this way, the historical research of `Dharma-Dhatu-Pratitya-` `Samutpada` is equal to the "Hemeneutical History of `Pratitya-Samutpada` "(緣起的詮釋史)，indeed. So the "Hemeneutical History of `Pratitya-Samutpada` " represents the differnet explanation of `Pratitya- Samutpada` (緣起) in different historical ages.
