依据对技术创新的定义,概括技术创新的动因包括市场竞争、预期利润以及企业家素质三个因素。本文通过对技术扩散演化模型发展过程进行梳理,在讨论生物进化论中的达尔文主义与拉马克主义的基础上,运用J.Metcalfe(梅特卡夫,2007)的技术扩散演化模型,动态分析市场竞争、预期利润以及企业家素质如何在技术创新活动中发挥动因作用。 According to the definition of technological innovation, the motivation to summarize technological innovation includes three factors: market competition, expected profit and entrepreneurial quality. Based on the discussion of the Darwinism and Lahkeism in the biological evolution theory, this paper uses the evolution model of technological diffusion of J. Metcalfe (2007) to analyze the market competition dynamically , Expected profit and how entrepreneurial qualities play a motivation role in technological innovation activities.