Abstract: Sharing Service Innovation (abbreviated as SSI) is a theoretical result of innovation in the new era and environment, which may become an important way to upgrade China's manufacturing industry to manufacturing service industry. Based on the programmatic grounded theory method, the research selects a vertical case of Shenyang Machine Tool (SMYG) with eighty-three years' developing history. According to the case interviews, case analysis and literature research, the study conducts open decoding, spindle decoding and selective decoding by a longitudinal qualitative research, which clarifies the genetic sources, four genetic categories of SSI including the earlier gene, structural gene, regulatory gene and later gene. The corresponding 21 core constructs and 48 gene elements and the mechanism of gene expression is revealed. The value co-creation and ecosystem construction as two dynamic source bases of SSI is demonstrated. Finally, the genetic growth path of SSI is deconstructed and the concept of SSI is clarified. The construction of the basic theory of SSI not only enriches and refines the theory of service innovation, but also provides a new idea for the development of the theory of sharing economy. Meanwhile it also can provide a realistic path for the transformation and upgrading of China's manufacturing industry.

Key words: Sharing Service Innovation(SSI), sharing economy, manufacturing enterprises, servitiazation, genetic growth