Source of analogy, outcome of analogy and knowledge unit of analogy

The research on the way of analogy formerly went fr om the angle of psychology or thoughts, which shows merely the foundation. This article, from the aspect of the management of knowledge, puts forward the concep t of the three factors of analogy Source of Outcome of Analogy and Kn owledge Unit of Analogy, and studies the two basic phenomena of knowledge tran sformation in the process of analogy: the abstraction of knowledge and the concr etion of knowledge. It thus builds up the model of analogy.