Abstract:Cloud innovation which fully utilizes the information technology of cloud calculation, big data and etc is opener innovation during the Internet plus times, and "Low cost, high efficiency" is its notable characteristics. Based on the CAS theory and innovation theory, the paper analyzes the complexity features of cloud innovation, and then explains its micro-learning mechanism, coordination mechanism, benefits orientation mechanism, market evaluation mechanism and the theory model of cloud innovation which a lot of agents participate is constructed and the interaction relations among the agents, environment and innovation resources are outlined. At last, the paper puts forward some measures, such as making organization structure soft, optimizing innovation environments and strengthening study and communications to increase the innovation level in order to have guidance for the organization innovation.