Abstract: The current research about (The definition convert The book of Changes into Chan of Buddism) which was written by Ou Yi master. Mostly incline toward the research of "the interaction between the Changes and the Buddism" or "the interaction between the Confucinism and the Buddism", and concerning about the time and position in life which from the book, up to now seem not to have a related research. The issue of the time and position in life were the cour thought of the book. The book had been discussing the issue all the time, and had been teaching human how to tending the lucky chance and avoiding the bad chance. Most importantly, Ou Yi master discussed the issue with the Buddhist thought. After all, the the Buddhist doctrine could not leave the world to feel the world. Before becoming the Buddha, you have to practice the humman life and fix the human problum. It is the motive for me to research the ussue. This essay plans to research and analyse three section. "the time in the life"、"the position in the life"、"the convers of the time and the position in the life" which were concerned from 《The definition convert The book of Changes into Chan of Buddism》. Ou Yi master who was to be a monk and talk about the problem of the person in the world. The theory "the time and position in life" had already surmounted general common customs of view. Take a comprehensive view of 《The definition convert The book of Changes into Chan of Buddism》, The issue of "the time and position in life" is the bridge to interact between the world studies and the Buddhist studies . In regard to the world studies, the mothed of tending to the lucky chance and avoiding the bad chance is the most important way for the gentleman to become a saint. In regard to the Buddhist studies, the mothed of tending to the consciousness and relieveing the puzzle is the most important way for the Buddhist to become a Buddha. The value of the book is Ou Yi master could quit to seek the fame and fortune and promote the meaning and value of the life.
