道家以老莊為巨擘，然其始則起於西周的史官。本論文縱論道家流變之跡，起於西周，終於魏晉，凡分六期：

一、形成期：西周史官的原始道家。

二、成熟期：春秋史官老聃的思想。

三、全盛期：戰國下半葉道家的多元發展，可分三派：(一)莊子學派。(二)黃老學派。(三)楊朱學派。

四、科學期：東漢王允和張衡的道家思想中的科學精神。

五、蛻變期：魏晉的道家思想。

Lao-Tze and Chuang-Tze were representative figures of Taoism in Pre-Chin period. The origin of Taoism could be derived from the historical officials in Western Chou Dynasty. The paper allocates the changes of Taoism from Western Chou Dynasty to Wei-Jin period to six segments: 

1.The formation period: the primodial Taoism of Western Chou Dynasty's hisorical offi-cials. 

2.The maturity period: the Lao-Tze thoughts in Spring-Autumn periods. 

3.The full development period: the period of warring states can be divided as: A.the Chuang-Tze scholar type B.the Huang-Lao scholar type C.the Yang-Chu scholar type 

4.The Huang-Lao period: the Huang-Lao thoughts in the beginning time of Han Dynasty. 

5.The scientific period: the scientific ideas from Wang-Chung and Chang-Hen. 

6.The Changing period: the Taoism in Wei-Jan periods.