【Purpose/significance】 Under the digital economy, the integration of information and information technology in the informa⁃

tion service of mobile e-commerce shows new characteristics. A scientific understanding of the formation mechanism of mobile e

commerce information service ecosystem (MEISE) can reveal its internal operation mode and law, and provide theoretical guidance for the development of mobile e-commerce.【Method/process】 Firstly, the connotation and structure of MEISE is explained based on the composite concept of information ecology and service ecology. Then, combining the symbiotic relationship between scene marketing and mobile e-commerce operation, the prerequisite for the formation of MEISE is analyzed according to the "Context five forces",namely mobile devices, big data, sensors, positioning systems and social media.【Result/conclusion】 Based on the three dimensions of action subject, resources and value, the formation mechanism structure model of MEISE was constructed. Attracted by the co-creation of value, the stable relationship formed by the three actors is the main driving force for the formation of MEISE.【Innovation/limita⁃tion】 Based on the service-oriented logic, the service ecology and information ecology theory are combined, and the internal connec⁃tion between scene theory and information service ecosystem is deeply explored, which is a new systematic theoretical analysis frame⁃work and expands the practical application of information ecology theory. However, the analysis of the application of information tech⁃nology is limited to the macro layout, and its specific cooperation mode is not described.