[目的/意义]基于版权保护的演化博弈分析，有助于探究数字内容产品的原创主体对仿冒行为是否具有容忍度，以及不同仿冒水平下实施版权保护的策略选择，对规范数字内容产品市场主体行为具有一定指导意义。[方法/过程]首先借助演化博弈模型，分析原创主体与仿冒主体的利益演化过程，探究版权保护下原创主体对仿冒水平的容忍行为；然后通过细化博弈双方的利润函数模型，探究原创主体容忍度水平的决定因素。[结果/结论]原创主体对较小的仿冒水平存在一定的容忍度，对较高的仿冒水平零容忍。最大仿冒水平容忍度由仿冒交叉收益系数、收益模型常系数、产品研发成本系数和原创主体的产品研发努力水平倍数4个因素共同决定。
[Purpose/significance] Based on the evolutionary game analysis of copyright protection, it is helpful to explore whether the original subject of digital content products has tolerance to counterfeiting behavior, and to explore the strategic choice of implementing copyright protection under different counterfeit levels. It has certain guiding significance for regulating the behavior of market participants in digital content products.[Method/process] Firstly, the evolutionary game model was used to analyze the interest evolution process of original subject and counterfeit subject, and to explore the tolerance of original subject to counterfeiting under copyright protection. Then, by refining the profit function model of both sides of the game, the determinants of the tolerance level of the original subject were explored.[Result/conclusion] The original subject has a certain degree tolerance for the lower level of counterfeiting and zero tolerance for the higher level of counterfeiting. The maximum counterfeit level tolerance is determined by four factors:the counterfeit cross profit coefficient, the income model constant coefficient, the product R&D cost coefficient and the product R&D effort multiples.
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