Abstract: Jian ‘anqizi’s literal works and their historical position have been regarded as the mere handmaid of the Three Caos' literal works generally. In fact, their works have the unique achievement. This article tries to study Jian ‘anqizi’s literal works and their historical position from the essence and expression of the "Hanyin" and "Weixiang" in the artistry and essence. They works reflect the historical transmission from the "Hanyin" to the "Weixiang". And they are the transition of literature from the Two Han Dynasties to the Wei and Jin Dynasties from the big aspect; they are the transition of literature from Caocao to Caopi and Caozhi from the small aspect.