Environmental regulation and technology spillover are the main factors affecting the technological innovation capability. In this paper, the system dynamics concept model is built to analyze the feedback mechanism of environmental regulation and technology spillovers coupling. And then this study qualitatively analyzes the coupling effects of technology spillovers and environmental regulation, so as to compare provincial differences in technological innovation capability under environment, technology and coupling. Based on the point of view above, this study compares provincial technological innovation capability via lateral and vertical. It distinguishes the "environment", "technology" or "two-way" preference provinces effectively. It also verifies the effectiveness of the provincial technological innovation capability evaluation methods (WT) and the superiority of technology spillover effect and coupling that the essay proposes. Finally, this study proposes that strengthening provincial environmental regulation efforts and optimizing provincial technical overflow path are keys of promoting efficient coupling of environmental and technologies, easing the shortage of resources and elements mismatch, and ultimately enhancing the technological innovation capability.