The imago is the perfect and organic combination of the ＂meaning＂ that the author intends to express and the ＂image＂ that the author recurs to. In the classical literature, there are two kinds of usages of the imago. One is plain, which has already been a long-range and abundant usage, forming some regular aesthetics connotation; the other one contains stationary intension in specific works, being endowed with profound and particular connotation and distinguished with the function in normal usages. The ＂the lonely wild goose＂ imago in Busuanzi by Sushi should be classified to the latter classification.