| The development of Internet economy has led to a new form of economic organization and market competition, and the platform economy as a new business model is developing rapidly. Highly viscous platform economy is increasingly changing the ecological environment of traditional industry chain and value chain,which has become new engine in promoting the development of service economy and new leader in industrial transformation and upgrading and promote the development of service economy,and is regarded as "the crown of service economy".And the platform enterprises in the industrial chain of high-end are the main force of platform economic innovation, because of their rich income, initiative, and favorable position in the competition. At the same time, the Internet platform enterprises provide valuable value for the intangible service. In the environment of homogeneous competition, heterogeneous coverage and multi-open interaction, the platform enterprises must assemble the innovation points and improve their viability and competitiveness in the commercial ecosystem, so open service innovation came into being. Therefore, it is of great significance to study the characteristics and rules of open service innovation generation in the Internet platform enterprises to promote the overall innovation and development of the platform economy.The combination of service innovation and open innovation has formed a concept of open service innovation, in which the service innovation is the content and purpose, the open innovation is the way and the means. This paper introduces the business ecosystem theory to analyze the participants of the network platform commercial ecosystem. Moreover,based on the characteristics and rules of the open service innovation, the mechanism of the open service innovation of the network platform is demonstrated from the individual level, the organization level and the network level. The main work of this paper is as follows:Firstly, this paper constructs the structural model of the network platform commercial ecosystem based on the commercial ecosystem theory and expounds the characteristics of the open service innovation of the network platform enterprise from the perspective of commercial ecosystem. In summary, the paper constructs the research framework of the open service innovation mechanism of the network platform enterprise based on the leader’s individual-organization-network. At this point,a definite research idea of this paper is the trinity composed of the leader’s individual, organization, and network.Secondly, starting from the individual leader, six representative enterprises are selected to carry out exploratory case study, and the collected data is encoded based on the grounded theory. The characteristics, thinking and leadership of platform leadership are obtained, and influence model of platform leadership on the realization of open service innovation is constructed under self-organization management mode. At this point, the influence of platform leadership’s characteristics,thinking and leadership on open service innovation and their relationship are well known from the individual level.Thirdly, at the organizational level, the Meta literature analysis method is used to collect the influencing factors of the open service innovation and is carried on the statistical analysis to extract the high frequency vocabulary. By using ROST CM6.0 to analyze the conclusions of the collected literature, it is found that there are correlations between the factors of organizational level. With the help of expert scoring method and social network analysis, the importance of organizational factors in the open service innovation is quantified by using Ucinet. So far this paper grasps the impact of various factors on the role of open service innovation from the internal level of the organization.Finally, the data of core ecological body of open service innovation of platform enterprises from investigation are adopted from the network level, and the network governance model adopted by the network platform enterprises in the process of open service innovation and the internal connection between the governance mode,style and the open service innovation performance were implored by using the method of multivariate statistical analysis. At this point, from the external network level, this paper summarizes the network governance model and governance mode of network platform enterprises in the process of open service innovation.It can be seen that this paper has the following main contributions: (1) Based on exploratory multi-case analysis and the grounded theory coding technology, the characteristics, thinking and leadership of platform leadership are determined, which makes the concept of platform leadership more realistic and persuasive; (2) Based on meta literature analysis, the influencing factors of organization level of service innovation, open innovation and open service innovation are introduced into the process of open service innovation of network platform enterprises, and the influence degree of each factor is quantified, and the expansion of influencing factors of open service innovation is achieved at the organizational level; (3) Based on the contract theory, the relationship governance and contract management are introduced into the open service innovation research of the network platform enterprise,and the relevant hypothesis is supported by the empirical test,and the application scope of the contract theory is extended. |