Abstract:First, the paper analyzes characteristics and evolution of innovation ecosystem, summarizing the six mechanisms are the foundation of enterprise survival growth including resource integration, business model innovation, technical innovation, capability integration, coupling mechanism and cooperation-competition mechanism, which are formed in the evolution and development process of the innovation system. Then the paper explores the internal logic for enterprises to improve their innovation ability under the innovation ecosystem. Basic organizational capability is upgraded due to resource integration and business model innovation mechanisms; coordination ability is improved through technical innovation and capability integration mechanisms; and coevolution ability is promoted by coupling mechanism and cooperation-competition mechanism. Finally, Alibaba as an empirical analysis is served for verifying the inner logic of the enterprise innovation ability promotion.