Abstract:It is believed in the history field that Zhuang Zi, Nei Section was written by Zhuang Zi himself. The paper, through the study of the unity and continuity in the seven articles of Nei Section,proves that the ideological contnet of the above seven articles formed the whole concept, although there were different focus points in each article. Only if we grasp the integrated thoughts of Zhuang Zi, Nei Section, can we compare the ideas in Nei Section with the ones in Wai Section and Za Section in Zhuang Zi and can we know further the difference between Lao Zi and Zhaug Zi.