Abstract: Attentions are not sufficiently paid to the study of the thought of psychology in The Book of Changes. This paper aims at the general undertstanding of the thoughts of psychology through the study of "heart" and "thought" in the book,We also probe into the contributions of the book in the cognitive process and the level of thinking in the history of the Chinese thought of psychology, and the influenece it has made in the philosophers in the time of the Early Qin.

Key words: The Book of Changes, thought of psychology, historical influence