Abstract: Innovation is the key for enterprises to obtain the competitive advantage. Solving the priority problem of product and service innovation is conducive to the implementation of service-oriented strategy of manufacturing enterprises. With the deepening of the application of digital technology, the emergence of digital production factors, the continuous innovation of business processes, the transformation of enterprises’ value proposition and value creation mode are the main incentives for the change of product and service innovation’s priority. It is more and more difficult for the enterprises to make the decision of the priority. Therefore, it is necessary to put the product and service innovation in the scene of digital transformation, and determine the priority and evolution law of them. Based on the theory of population reciprocity model, this study constructs a symbiosis evolution model of product and service innovation, aiming to analyze the symbiotic behavior pattern. Then, combined with the development of Haier Zhijia's networking stage from 2011 to 2019, this paper selects the income of main products as the population density variable of product innovation and the income of comprehensive service business as the population density variable of service innovation. And it compares the dependence coefficient between them, and divides several stages of digital transformation in combination with enterprise’s economic value added (EVA). The relationship characteristics and dynamic evolution law of product and service innovation in different stages are analyzed. The results of this study show that: (1) under the context of digital transformation, manufacturing enterprises are constrained by internal resources and capabilities, which makes product and service innovation have an asymmetric mutually beneficial symbiotic relationship. Moreover, the level of product and service innovation enabled by digitization has been improved to varying degrees, and shows phased differences of dynamic changes; (2) The digital transformation of manufacturing enterprise accelerates the integration of product and service innovation, and is experiencing the process of inside to outside, and finally to both inside and outside. It is also a service-oriented process of the transformation from product leading logic to customer leading logic. The management inspirations of this study are as follows: (1) the development of service innovation activities cannot leave the support of product technology. Under the synchronous promotion of service and digitization, "digital servitization" has become the general trend for manufacturing enterprises; (2) The service-oriented of manufacturing enterprises has experienced the dynamic evolution law of "product innovation, service innovation, and then integration innovation". The role of digitization in this process is as follows: internal digitization enlivens enterprise innovation resources; External digitization accelerates the value creation of service innovation; However, the data formed by external digitization in the direct interaction between supply and demand provides direct nutrients for internal innovation of enterprises. As a result, this study helps to enhance the understanding of the relationship between product and service innovation in the digital environment, and provides theoretical guidance for manufacturing enterprises to implement digital and service-oriented transformation

摘要： 创新是企业赢得竞争优势的关键，厘清解决好产品创新与服务创新的优先级问题有助于制造企业服务化战略实施的顺利展开，而随着制造企业数字化应用场景的增多程度不断加深，使得两类创新优先级决策愈加困难。借助种群互惠模型解析了构建出两类创新共生演化规律演化模型，分析两类创新共生模式；结合海尔智家2011-2019年实施数字化与服务化转型的纵向案例分析，划分了其数字化转型的阶段，据此揭示解析了不同阶段下两类创新关系特征及动态演化规律。研究表明：数字化转型下两类创新存在着非对称互惠共生关系，且优先级变动具有阶段性特征；随着企业主导逻辑的转变，数字化转型经历着由内及外，再到融合，有效加速了两类创新协同发展。研究结果有助于增强对数字化环境下制造企业对两类创新相互关系的理解，为制造企业实施数字化与服务化转型提供理论指导。