This study is divided into three main parts, and additionally includes an introduction, conclusion, footnotes and bibliography. The first part deals with the historical development of the social philosophy created by the philosophers in the Wei-Chin Period: (220-420 A.D.) from the Taoists Ho-Yen (191-249 A.D.), and Wang-bi (226-249 A.D.)through the Confucianists Fu-Hsuen (217-278 A. D.) and Pei-Twei (267-300 A.D.) to the Confucio-Taoists Cho-Hung (253-333 A.D.) and Tao-Siam (365-427 A.D.). This historical process reveals the ascension of Taoism and the descension of Confucianism though some philosopher tried to make amalgamation of those two main Streams in that period. The second part is concerned in the essential contents of the social philosophy in the Wei-Chin period. It shows a strong value-changing from the Confucian moral approach to the Taoist mystical one. The search for the Corporeal longevity was the main stream for the Scholars by negligence of the spiritual lifestyle. The social principle was declined because of lacking interpersonal relation. The confucianists felt in that time without power. Finally, in the third part, we attempt a critique on the values and the limitations of the social philosophy in the Wei-Chin period, from the historical of view or the essential significance we maintain that, the Taoism may strengthen the personal individuum, but it neglects the interpersonal relation in the social affair, which may be more important for social philosophy. The philosophical contribution in Wei-Chin period was rare.