The arrival of the era of big data brings unprecedented opportunities and challenges to the field of scientific and technological innovation, and the new innovation mode Crowdsourcing is in vogue. There are many incentive factors for the orderly progress of Crowdsourcing activities, but most of the existing researches focus on a specific research perspective, not only ignoring the synergy between incentive factors, but also ignoring the synergy between participants. Therefore, starting from the intermediary platform, this paper takes Crowdspring platform and zbj.com as the case study object, analyzes the Crowdsourcing process of them, and explores the construction and effectiveness of the synergistic incentive mechanism between creative Crowdsourcing subjects.