Conceptual blending theory and its model explain the mechanism of semantic generation, understanding and management. The previous studies have described, completed and even criticized the model＇ s operation process. Among other things, a plenty of discussions have been on the Generic Space＇ s construction, mechanism and meaning. This paper analyzes the essence of the Generic Space and proposes to understand it as a dynamic, psychologically true neuron-information binding process. It is to prove the necessity of the existence of the generic space, and to make certain completion on the conceptual blending theory.