Abstract: Due to entrepreneurial practice of small and micro businesses in Zhejiang pilot central towns, collaborative entrepreneurial behavior has become a new emerging issue attracting much attention. Discourse analysis is a valid path on cognizing business complex behavior in evolutionary environment. Based on discourse analysis, this paper focuses on small and micro businesses in central town context and researches the occurrence mechanism of collaborative entrepreneurial behavior. The conclusions include: Firstly, this paper refines discursive model on occurrence mechanism of collaborative entrepreneurial behavior of small and micro businesses in central town context. This model indicates that collaborative factors consists of four types: factor collaboration, subject collaboration, behavior collaboration and spatial collaboration. The evidence chain is from central town to collaborative factors to collaborative entrepreneurial behavior. Secondly, every collaborative factor includes four subcategories, such as cluster extrusion, network driving, entrepreneurial learning and collaborative governance are four subcategories of behavior collaboration. Thirdly, we propose eighteen strong relational paths, such as network nodes affecting deliberate learning, and ten weak relational paths, such as spatial collaboration affecting collaborative VC. It enriches present entrepreneurial theory, and provides practical guidance for collaborative entrepreneurial practice of small and micro businesses.