As the first systematic explanation of Wujing,Jingxue in Han dynasty built a new cosmology and a schema of cosmos and man,which was not only the thought of that time,but also the beginning of tradition of Jingxue over two thousand years. However,the thought of Jingxue in Han dynasty has little relationship with the meaning of Wujing itself. It originated from Zou Yan’s thoughts,which combined the ancient Yinyangwuxing with astrology. It is the quality of modern science which the astrology has,that made Zou Yan’s theory influence the Jingxue in Han dynasty deeply. Accordingly,we can see the great significance of astrology for whole Chinese classical academic study and thought.