Abstract: “Chang’an”was an important image in Bai Juyi’s poems.Through examination of Bai’s poems, we can find that his identity as a scholar from other places, the official business and the spiritual pressure caused by it brought him the sense of alienation to Chang’an when he first came to the capital.The poet stayed leisurely and transferred his attention to the noisy outside world.He took such means to diminish the sense of alienation.During the period of his banishment and relegation, due to the different custom and political setbacks, he recalled Chang’an in his poems.Through his selective description in poems, Chang’an has become warm and lovely.At the same time, the records about his relegation and banishment have shown his worries in his deep mind and thirst for returning back to Chang’an.