Imagination is literature's soul if language is its body. Imagination makes literature a unique language expression form that can not be replaced by any other forms. In literature imagination, authors' personal talent and exertion, and corresponding cultural field at a deeper level, are needed. This article probes into literature imagination from three aspects: 1) its cultural resources; 2) its classification from the angle of culture; 3) criticizing its chronic illness. A common idea woven into these expatiations is that: literature imagination is implemented by authors, but actually it is an expression of social consciousness and unconsciousness.