Abstract: Resource bricolage used to be an important strategy for new enterprises to achieve value creation, but now it is facing the challenge of weakening entrepreneurship. This study takes non-new-venture of small and medium-sized enterprises (SMEs) as the research object, focuses on the interaction between government and enterprises in an uncertain environment, and reveals the internal correlation between resource bricolage and entrepreneurship. It is found that resource bricolage has an inverted U-shaped relationship with an enterprise's innovation orientation.Resource bricolage has a negative impact on the proactiveness and risk appetite. The relationship between government and business has a double-edged sword effect on the mechanism of resource patching and entrepreneurship, and environmental uncertainty has an inverted U-shaped regulating effect on the relationship between resource bricolage and entrepreneurship. Therefore, the key to revitalize excellent entrepreneurship lies in grasping the principle of government-business relation. Non-new-venture SMEs need to re-examine the strategic significance of resource bricolage and give it more profound action connotation to achieve high-quality and leapfrog development.